Poll: What Should The Red Sox Do About First Base?
The Red Sox entered the 2025 season with big expectations after adding Garrett Crochet and Alex Bregman to a team that already had Kristian Campbell, Roman Anthony, and Marcelo Mayer all knocking on the door. So far, things have not gone quite as smoothly as fans in Boston were surely hoping. While the club is just two games back in the AL East, that’s with a lackluster 18-18 record thanks in part to spotty health in the rotation behind Crochet. The injury bug has now moved onto the lineup as Triston Casas has undergone season-ending surgery on his knee.
The 25-year-old was expected to be a major piece of the club’s lineup this year, but his campaign is now over before it ever really got going. Casas’s 112 plate appearances this year were subpar, as he hit just .182/.277/.303 across 29 games before going down with injury. Those struggles were mostly fueled by a low .217 BABIP that was sure to rebound given time, however, and there was little reason to think Casas wouldn’t eventually experience enough positive regression and finish the year in that range of a 125 wRC+, which was his career mark entering 2025. Now, of course, he won’t get that opportunity.
Without Casas locking down first base, the Red Sox don’t have many obvious solutions they can rely on to take up the lion’s share of playing time at the position. Romy Gonzalez was off to a hot start (133 wRC+) to open the year in a part-time role, but his .421 BABIP is completely unsustainable and he’s never hit at an even league average level before in his career. Gonzalez is currently slated to share time with Abraham Toro at first base in the short-term, but the switch-hitter has a similarly lackluster career 81 wRC+ while playing mostly in part-time capacities around the AL West over the years. Depth options at the minor league level are similarly uninspiring. Vaughn Grissom was a top prospect in the not-too-distant past but has yet to establish himself at the big league level. Blake Sabol has at least a little experience at first base, but didn’t hit at all in a brief call-up earlier this year.
None of those options appear likely to provide even average production at first base this year for the Red Sox. That could lead the club to look for external additions, but those options may not be substantially better than their current internal group. After all, teams are typically reluctant to swing significant trades this far from the trade deadline, so external additions would likely be limited to non-roster players in other organizations like Mike Ford, Dominic Smith, or Jon Singleton unless they can convince a player like Anthony Rizzo to resume his playing career at this late point in the calendar. Any of those options could make sense as a lefty complement to Gonzalez, and Smith in particular was used as a stopgap by the Red Sox just last year with some success.
Perhaps they could even pry an ancillary 40-man player away without a clear path to playing time away from another organization. Jake Bauers (Brewers) and former Red Sox Justin Turner (Cubs) are both playing in bench roles in the NL Central. Boston’s former chief baseball officer Chaim Bloom now works for the Cardinals, who have Luken Baker on the roster but without much playing time to offer. Juan Yepez is on the Nationals’ 40-man roster but currently playing the minors. Any of those external options could likely be more productive than the club’s internal group of first basemen, but going outside of the organization would require working out a trade with another club who may not be inclined to sacrifice their own depth, particularly in the case of players already on the 40-man roster, and they’re hardly impact options themselves for a team that sorely needs a boost.
One way to replace Casas with a player who can offer a more impactful ceiling would be to move some of the club’s existing talent to first base. Rafael Devers got bumped off third base by the Bregman signing and is currently the everyday DH in Boston. Perhaps he could be shifted to first base, opening up DH for either Anthony or Mayer to make the jump to the big leagues. Another option would be to get Anthony or Mayer regular reps at first in the coming days ahead of a promotion in the near future. Perhaps even Masataka Yoshida, who has been sidelined this year after shoulder surgery hampered his ability to make throws in the outfield, could handle first base and make a quicker return from the injured list.
Any of those players would be a fairly definitive offensive upgrade over either the club’s internal options already familiar with the position or any realistic external additions at this point in the calendar. The problem with that plan, however, is that none of those players have ever played first base as a professional. While the position is fairly low on the defensive spectrum, asking a defensively-limited player like Devers to pick up an entirely new position on the fly seems risky, as would be the case for asking either Mayer or Anthony to balance learning a new position with the adjustments and struggles that can often come with a young player’s first call-up to the majors.
That’s why, as noted by MassLive’s Chris Cotillo over the weekend, Red Sox brass have indicated that they don’t intend to move anyone to first base on the fly. That, of course, could change. The general expectation when the Red Sox signed Bregman was that he would play second base and Devers would remain at third, and that changed fairly quickly after Spring Training began. It’s not out of the realm of possibility that the club finds itself unsatisfied with the options at its disposal and eventually begins having one of the club’s other players taking grounders at first.
How do MLBTR readers expect Boston to address the vacancy at first base? Will they stick with their current group of options, find someone from outside the organization, or move one of their own players to first? Have your say in the poll below:
How Will The Red Sox Replace Triston Casas?
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They'll move someone who was already in the conversation for regular playing time to first base. 39% (2,194)
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They'll stick with internal depth options who already play first base before re-evaluating at the trade deadline. 33% (1,839)
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They'll find an external addition as soon as possible. 28% (1,592)
Total votes: 5,625
Triston Casas Likely To Miss Entire 2025 Season Due To Knee Surgery
The Red Sox announced this morning that they have placed first baseman Triston Casas on the 10-day injured list with a ruptured left patellar tendon. He suffered the injury during last night’s game. Chief baseball officer Craig Breslow says that Casas will have surgery and they don’t expect him back this year, per Chris Cotillo of MassLive.
To replace Casas on the active roster, the team has selected Abraham Toro‘s contract from Triple-A Worcester. Boston had an open spot on the 40-man, so no further corresponding transaction was necessary. In an additional roster move, the Red Sox reinstated Brennan Bernardino from the bereavement list and optioned Luis Guerrero to Triple-A.
The Casas news is awful but unsurprising. He suffered an obvious injury last night when he hit the first base bag awkwardly while trying to beat out a grounder. He was down on the ground in clear pain for a long time and eventually was taken off the field on a stretcher. It seemed likely that he would miss an extended period of time and that is now confirmed. He hasn’t yet been moved to the 60-day IL but that will happen whenever the Sox need a 40-man spot.
The Sox will have to figure out what to do about replacing Casas at first base. Breslow says that all options are on the table and he didn’t rule out Rafael Devers taking over, though outfield prospect Roman Anthony or infield prospect Marcelo Mayer are unlikely to be moved to first.
Devers is currently the full-time designated hitter after getting bumped off third base by Alex Bregman. Moving him into first base and opening the DH spot would help the club with some roster crunches elsewhere.
Anthony and Mayer are two of the best prospects in baseball, but both are currently in Triple-A and somewhat blocked on the big league roster. The Sox currently have an outfield mix consisting of Jarren Duran, Wilyer Abreu, Ceddanne Rafaela and Rob Refsnyder. The infield has Bregman, Trevor Story and Kristian Campbell at third base, shortstop and second base respectively. Outfielder/designated hitter Masataka Yoshida could get into the mix as well, though he has been battling ongoing shoulder problems and his return timeline is unclear.
With Devers in the DH spot, it’s a bit of a crowded picture. If he were to take over at first base, that would open things up and allow various players to rotate through the DH spot. Devers has no professional experience at first but plenty of subpar third basemen have made the move across the diamond over the years. While Breslow seemed to leave the door open to the idea, manager Alex Cora downplayed the possibility. “From my end, right now, no…. he’s my DH,” Cora said, per Alex Speier of The Boston Globe.
For now, it seems like utility infielder Romy González will be the first attempt. Cora tells Speier that this is an opportunity for González “to go out and perform.” He is the only Boston player apart from Casas to have played first base this year. He’s having a decent season so far, with a .279/.340/.419 batting line and 113 wRC+. However, that comes with no home runs and a .364 batting average on balls in play. In his 502 career plate appearances, he has a .246/.277/.390 line and 81 wRC+.
That career production would be less than ideal production from first base, which is generally a bat-first position, but the Sox will give it a try for now. Perhaps they will explore some external options in the coming weeks, looking to make a trade or grab another player off waivers. Peter Abraham of The Boston Globe says that Breslow is indeed looking at the trade market.
González had previously been in a multi-positional role, having also played some second and third base this year. In his career, he has played shortstop and the outfield as well. With him set to become the club’s regular first baseman for now, Toro has been added to add some defensive versatility to the bench.
Toro, 28, signed a minor league deal with the Sox in the offseason. He has been performing well in Triple-A so far this year, with a .310/.403/.480 line, though a .392 BABIP is doing him some favors. In his big league career, he has played the three non-shortstop infield positions and the outfield corners. He has always hit well in Triple-A but has a .220/.285/.353 line and 82 wRC+ in 1,298 big league plate appearances.
Photo courtesy of Eric Canha, Imagn Images
Triston Casas Suffers “Significant Knee Injury”
Triston Casas suffered a “significant knee injury” during tonight’s win over Minnesota, manager Alex Cora told reporters (including Chris Cotillo of MassLive). According to Ian Browne of MLB.com, Casas remains at a local hospital after being taken off the field on a stretcher.
The injury occurred in the second inning. Casas hit a check-swing chopper up the first base line. When Joe Ryan bobbled the ball, Casas lunged to the first base bag in an attempt to beat the throw. He hit the base awkwardly and stumbled over the foot of Minnesota first baseman Ty France. Casas immediately favored his left knee and was down for several minutes before being stretchered off. Romy Gonzalez finished the game at first base.
It’s devastating news for Casas, who is facing a second lengthy absence in as many seasons. He was shelved between late April and the middle of August last year by a lingering rib injury. He hit .241/.337/.462 with 13 homers in 63 games when healthy. Casas has struggled early this season, posting a .182/.277/.303 slash with a trio of homers across 112 trips to the dish. The Red Sox will presumably provide more specifics on the injury and treatment plan in the coming days.
Gonzalez has started seven games at first base this season. He’s the only player other than Casas to log any action there. Gonzalez is a multi-positional infielder who has spent the bulk of his career at second base. He’s hitting reasonably well this season but entered play tonight with a career .245/.277/.388 batting line over 499 plate appearances. It’s unlikely that the Sox would want to rely on him as an everyday first baseman for an extended stretch.
The Sox don’t have an obvious solution in the minors. Nathan Hickey is the primary first baseman at Triple-A Worcester. He’s hitting .262/.300/.429 through his first 22 games of the season. Infielder Abraham Toro is having a much better year for the WooSox, hitting .323/.417/.500 across 115 plate appearances. He has made five starts at first base this year and has 90 career major league innings at the position. He’s likelier to receive a call-up than is Hickey, but he’s more of a second baseman/third baseman with a somewhat similar profile to Gonzalez.
One speculative possibility would be to turn to Rafael Devers, who hasn’t played a single defensive inning all season. Devers has never played a professional inning at first base. He’s obviously familiar with the infield, but Cora made clear at the beginning of the season that the Sox viewed him as a full-time designated hitter for the time being. It seems they want Devers focused exclusively on maintaining an offensive rhythm as the DH rather than getting occasional defensive work after being pushed off third base by the Alex Bregman signing.
That may need to change at some point. Keeping Devers as a full-time DH would essentially block any path to playing time for Masataka Yoshida whenever he’s able to return from a shoulder injury. Yoshida could theoretically play some left field, but that’d require pushing Jarren Duran to center and would only be an option until top outfield prospect Roman Anthony comes up from Triple-A. There’d be more flexibility if the Red Sox were comfortable using Devers at first base.
Triston Casas Discusses Trade Rumors
First baseman Triston Casas‘s name has been the subject of plenty of trade rumors this winter, even as chief baseball officer Craig Breslow has roundly insisted that Casas is not being shopped. With the Red Sox apparently involved in the markets for both Alex Bregman and Nolan Arenado, however, it’s not hard to see how adding another bat to the infield could spell the end of Casas’s time in Boston.
For his part, the soon-to-be 25-year-old slugger isn’t letting the noise get to him. As noted by Christopher Smith of MassLive, Casas acknowledged the possibility that he could be dealt if the right offer were to come along, adding that for the right package it could be in the “best interest” of the organization to move him or any player. Casas added that he’s been assured by the organization that there’s no substance behind rumors that he’s on the trading block before making clear that the rumors swirling around him this winter don’t bother him.
“I love Boston,” Casas said, as relayed by Smith. “I love everything about it and they’ve welcomed me with open arms since my first first professional day. So it would be great to play here as long as possible. I love the fans and they welcome me generously all the time. So I would love to play the rest of my career here. But if it’s elsewhere, I just feel like March 28, no matter where it’s at, I’m going to be playing major league games. So just focus on that.”
While he adds that he tries not to let the trade rumors “get to his head,” he reiterated his love for Boston and desire to stay in the organization long-term. That affirmation comes nearly a year after reported extension talks between the two sides, though those discussions ultimately did not lead to a deal. It appears there’s been no recent discussions about an extension, either, as Casas told reporters (including Rob Bradford of WEEI) today while appearing at the club’s Fenway Fest event that the sides have not talked about an extension since last winter.
Even setting aside the trade rumors, it’s not necessarily a shock that Casas and the Red Sox haven’t talked extension in the aftermath of the 2024 campaign. After all, last year was a difficult one for Casas. He spent much of the season on the injured list due to torn cartilage in his ribcage and when healthy enough to take the field slashed just .241/.337/.462 while striking out at a concerning 31.7% clip.
That production was still good for a 119 wRC+ overall, but that’s a step back from the 130 he posted in 2023. After an injury-marred down season that exposed a potential red flag in the form of an increased strikeout rate, the Red Sox are surely hoping to gather more information about both Casas and their outlook around the diamond before committing to him long-term. Meanwhile, Casas surely is hoping to quell any doubts caused by 2024 with a full, healthy season before he signs a long-term deal.
Turning back to the possibility of the Red Sox pursuing Bregman or Arenado, the connection between those pursuits and the possibility of a Casas trade hinges on the possibility of installing either of those additions at third base, causing incumbent third baseman Rafael Devers to move to first base. Manager Alex Cora discussed the possibility of moving Devers off the hot corner at Fenway Fest today, as noted by Jen McCaffrey of The Athletic. According to Cora, the club has not yet discussed a change of positions with Devers and that they would discuss the possibility with him before they get to the point of adding a new third baseman to the lineup. That generally tracks with the comments made by Breslow last month, which indicated the club has no current plans to move Devers off third base.
Triston Casas And Boston’s Infield Dilemma
The rumor mill has been a whirlwind for Red Sox fans this offseason, with the club diving headfirst into the Juan Soto sweepstakes only to come up short, then getting involved in the markets for Max Fried and Corbin Burnes before ultimately pivoting to Garrett Crochet and Walker Buehler. Now, Boston appears to be in the thick of the market for impact hitters. The club has not made its desire to land a bat who can help balance their heavily left-handed lineup out a secret this winter, and they’ve been connected to a number of major bats like Anthony Santander, Alex Bregman, and Nolan Arenado.
There’s been plenty of focus on the possibility of the club adding a right-handed infielder like Bregman or Arenado in particular. Either of those deals could come with complications, however. Kristian Campbell and Marcelo Mayer are both top prospects for the Red Sox who figure to debut in 2025 and fit best on the infield. As the club is currently constructed, with Triston Casas and Rafael Devers at the corners and Trevor Story at shortstop, second base appears to be the cleanest way for either of those players to get into the lineup- or for the club to add a free agent infielder. Bregman has indicated a willingness to play the keystone, but it would be a risky decision for the Red Sox to play a solid defensive third baseman out of position in deference to the incumbent Devers and his lackluster defense. And the idea of adding a glove-first third baseman like Arenado and moving him off the hot corner seems even more farfetched.
That’s led to plenty of speculation swirling around the future of Casas this winter, as the young first baseman would be by far the easiest piece of the club’s infield mix to move. Casas, who turns 25 next week, has done nothing but hit in the majors to this point with a .250/.337/.473 slash line in 222 big league games so far. That’s been good for a 125 wRC+, and with four years of team control remaining the slugger could be a building block for a number of teams around the game—including the Red Sox. While a player with Casas’s combination of talent and team control should garner plenty of attention if made available on the market, it’s worth noting that the youngster’s 2024 season may have raised some red flags that could make potential suitors concerned about his value.
For one thing, he missed most of the season due to torn cartilage in his ribcage. In the 63 games where Casas was healthy enough to take the field, he hit just .241/.337/.462 (119 wRC+) and posted the lowest walk rate (12.3%) of his young career. Both of those are still well above-average figures and not necessarily cause for concern by themselves, but Casas’s sharp uptick in strikeouts is more alarming. He struck out at a 31.7% clip in his 243 plate appearances last year. If he had stayed healthy enough to qualify, that would’ve been the second-highest strikeout rate in the majors last year behind only Zack Gelof. Third on that list is Reds phenom Elly De La Cruz, proving it’s at least theoretically possible to be an impactful major leaguer even if you punch out nearly a third of the time, but that’s a much steeper ask for a player as defensively limited as Casas.
Of course, those potential red flags haven’t stopped Casas from getting plenty of attention in the rumor mill. Chief baseball officer Craig Breslow has insisted that the club isn’t shopping the young slugger, but several reports have indicated that the club is at least listening to offers on him even if they aren’t placing him on the trading block outright. In particular, there was plenty of smoke surrounding the possibility of a trade between the Red Sox and Mariners regarding Casas last month. Those talks reportedly saw Seattle rebuff the idea of either trading one of their young starting pitchers for Casas or else trading Luis Castillo for a package involving both Casas and pricey DH Masataka Yoshida, while the Red Sox balked at the idea of trading Casas for Castillo without also offloading Yoshida’s salary.
With Crochet and Buehler now in the fold, the Red Sox have an abundance of starting pitching options that could make a deal for a player like Castillo less palatable. That being said, reports have indicated that the club could still be open to dealing Casas in order to facilitate other roster moves. One such roster move a trade of Casas could facilitate would be the addition of Bregman or Arenado at third base, while Casas departs the roster in order to allow a potential move to first base for Devers. Alternatively, parting ways with Casas could open the door for the club to instead add a right-handed slugger like Pete Alonso to the lineup at first base if the club opts to keep Devers at the hot corner.
It’s an interesting conundrum the Red Sox face: they’ve missed the playoffs in each of the past three seasons and finally appear poised to seriously contend for the AL East again in 2025. There’s at least theoretically room for an impact player on the infield as things stand, but a complicated positional fit and the presence of impact prospects at Triple-A nearing their big league debut would complicate any such acquisitions.
Should the club stand pat on the infield, preserving the potential star power of Casas and leaving the door open for Mayer and/or Campbell to step in at second base this year? Should the club deal Casas in order to guarantee that there’s room for both a top prospect and an impact addition on the infield, despite the questions regarding Casas’s current value? Or should the Red Sox push their chips in and sign an impact player while keeping Casas in the fold, regardless of the awkward positional fit and the risk of blocking impact prospects? Have your say in the poll below:
How Should The Red Sox Handle Their Infield?
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Keep Casas and sign an impact hitter despite positional concerns. 41% (1,843)
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Trade Casas and sign an impact infielder. 32% (1,431)
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Keep Casas and don't add an impact infielder. 27% (1,241)
Total votes: 4,515
Red Sox Notes: Arenado, Casas, Bregman, Sasaki
Reports last month from MLB.com’s John Denton indicated that the Red Sox, Mets, Phillies, Padres, Dodgers, and Angels were six of the teams (and perhaps the only six teams) Nolan Arenado was willing to waive his no-trade protection to join, should the Cardinals work out an acceptable swap with any of these clubs. Four weeks after that initial report, Boston remains “a preferred destination” for Arenado, according to MassLive.com’s Chris Cotillo and Sean McAdam. What isn’t known, however, is if the Red Sox and Cardinals are anywhere close on a deal, or if the Sox are particularly motivated to bring Arenado to Beantown.
Acquiring Arenado would check a couple of big needs off of Boston’s offseason shopping list. Chief baseball officer Craig Breslow reiterated earlier this week that the Sox were looking to add “a right-handed bat out of the middle of the lineup,” considering that the team is heavy with left-handed hitters. Bringing one of the best defensive third basemen of all time to Fenway Park would instantly help Boston’s subpar infield defense, and Arenado would even be reunited with his good friend and former Rockies teammate Trevor Story.
One initial roadblock, of course, is the fact that the Red Sox already have a star third baseman in Rafael Devers. Though Arenado has indicated that he is open to a position change in the right circumstance and Devers’ agent said in no uncertain terms in November that his client was staying at third base, it is hard to believe that Arenado would move off the hot corner in deference to a much weaker fielder in Devers. If a trade did happen, Devers would presumably become the new first baseman or DH, though this creates other conflicts with Triston Casas and Masataka Yoshida.
Both of those players, however, have been mentioned in trade talks this winter, and even in some of the same trade talks. Casas is the far more valuable trade asset of the two, and while Breslow said “we’re certainly not shopping him,” that naturally doesn’t mean Casas is off limits. Indeed, Cotillo and McAdam write that “there remains a belief in the industry that the Red Sox remain open to trading Casas, potentially for young pitching, to facilitate other roster maneuvering.”
It could be that the Sox are looking to first trade Casas before making any other moves, as their leverage in a Casas deal would be lessened if the Red Sox created a positional logjam beforehand. Trading Casas purely as a vehicle to clear payroll space surely isn’t Breslow’s preference, which is why that aforementioned attempt to link Yoshida and Casas together was still part of an attempt to bring Luis Castillo from Seattle to Boston.
Payroll is also a major aspect of any Arenado trade, as the third baseman is owed $74MM over the remaining three seasons of his contract. Between deferrals and the $10MM being covered by the Rockies, the present-day value of Arenado’s contract reportedly works out to $60MM. The Cardinals’ chief incentive in trading Arenado is naturally to move as much of this money as possible, and the proposed deal with the Astros that Arenado blocked would’ve seen Houston take on either $45MM (as per Katie Woo and Chandler Rome of the Athletic) or $59MM (as per ESPN’s Jeff Passan) of the $60MM figure.
Theoretically, the Red Sox could absorb the entire contract and still stay under the $241MM luxury tax threshold, as RosterResource estimates Boston’s current tax number at just under $212MM. It remains unclear exactly how much payroll capacity Breslow has been allotted this winter, as while the Sox have made overtures to several top free agents, their spending has been pretty modest to date. The Red Sox could perhaps convince the Cardinals to take on a bigger chunk of Arenado’s salary (or at least closer to the $45MM figure) if better prospects are offered in return. Chaim Bloom’s involvement in this speculative trade is an interesting wrinkle, as the incoming St. Louis president of baseball operations has plenty of knowledge of Boston’s farm system due to his past stint as the Red Sox CBO.
Trading for Arenado would come at a lesser overall cost than signing Alex Bregman, another top third baseman who remains on Boston’s radar. That said, the Red Sox are known to still be in the running for Bregman, who has some notable ties to the Sox in manager Alex Cora (from their days together in Houston) and his longtime friend Walker Buehler, who just signed with the Sox himself before Christmas. Buehler recently told Cotillo and other reporters that even in his brief time in a Sox uniform, “I have certainly made a pitch all over the place for [Bregman] to come to Boston.”
Turning to other Red Sox targets, it remains unknown if Boston is still one of the teams getting consideration from Roki Sasaki. Earlier this week, Sasaki’s agent Joel Wolfe updated reporters on his client’s search for a Major League team, and didn’t give any indication that the right-hander was finished with his in-person meetings with interested clubs.
The Red Sox weren’t one of the seven teams known to have spoken with Sasaki already, and word hasn’t broken if a meeting has been scheduled or perhaps it is has already taken place since Wolfe’s last presser. As of yesterday, WEEI.com’s Rob Bradford reported that the Sox hadn’t “been told they are out of” the running for Sasaki’s services, so the situation is still up in the air.
Craig Breslow Discusses Casas, Bregman, Devers
Red Sox chief baseball officer Craig Breslow met with the Boston beat on Monday to discuss the team’s offseason. MLBTR has already relayed Breslow’s notes on Lucas Giolito and Roki Sasaki, respectively. MassLive’s Chris Cotillo and Alex Speier of the Boston Globe were among those to cover Breslow’s other comments.
Most notably, the CBO pushed back against trade rumors swirling around first baseman Triston Casas. “I’m not totally sure where it comes from. We’re not shopping Triston,” Breslow said. “We see him as a guy that can hit in the middle of the lineup for a really long time here in Boston. I’ve seen some of the speculation about what deals may or may not have existed, or what may or may not have been proposed, and there was nothing that was remotely close. We’re certainly not shopping him.”
Reporting has generally characterized the Sox as being open to a Casas trade without suggesting they’re actively trying to deal him. That has been most prevalent in the context of attempting to line up a deal with Seattle for a controllable starter. Ryan Divish and Adam Jude of the Seattle Times reported during the Winter Meetings that the Mariners had rebuffed interest from the Sox in swapping Casas for a young starter like Bryan Woo or Bryce Miller. Boston has seemingly not had interest in a Casas for Luis Castillo framework. MLB.com’s Mark Feinsand wrote last week that the Sox would’ve wanted Seattle to take on the underwater Masataka Yoshida contract in that situation.
In any case, it looks increasingly likely that Casas will remain on the Red Sox going into next season. Boston has added Garrett Crochet and Walker Buehler to a rotation that already included Brayan Bello, Tanner Houck and Kutter Crawford. Giolito is shooting for an Opening Day return from internal brace surgery. That gives the Sox at least six viable starters, while Cooper Criswell and Richard Fitts are on hand as depth options. Garrett Whitlock is likely to kick back to the bullpen once he returns from his own elbow surgery.
While the rotation may no longer be a priority, Breslow highlighted two longstanding target areas: a right-handed bat and the bullpen. They’ve made progress in the latter area, bringing in Aroldis Chapman and Justin Wilson to strengthen the left side. Whitlock and Liam Hendriks could step in alongside second-year pitcher Justin Slaten in the late innings. Whitlock, Hendriks, and Wilson all come with some durability question marks. Chapman’s scattershot command makes him something of a wild card. Slaten, who is just one season removed from being a Rule 5 selection, might be the team’s safest reliever.
Relief pitching is tough to project, and the Sox have a more volatile bullpen than most contenders. There’s a decent amount of upside, but it’s not surprising that Breslow indicated they’ll look for another addition. The free agent relief market has barely moved. Only three relievers — Clay Holmes, Blake Treinen and Yimi García — have signed multi-year deals. Holmes is stretching out as a starter after signing a three-year contract with the Mets. Chapman and Nick Martinez (who accepted a qualifying offer from Cincinnati) are the only other relievers to sign for a guarantee above $10MM.
The slowly-developing relief market in part reflects a weaker than average free agent group. However, the top two relievers, Tanner Scott and Jeff Hoffman, remain unsigned going into the new year. Carlos Estévez, Kirby Yates, A.J. Minter and David Robertson are other relievers who have yet to sign. Ryan Helsley is the top name on the trade market, though the Cardinals seem to prefer to hold him until the deadline.
In contrast to the bullpen, Boston has yet to make a move for a right-handed hitter aside from a trade for backup catcher Carlos Narváez. The Sox lost Tyler O’Neill from a group that was already very left-handed. Breslow reiterated that the Sox wanted impact production from “a right-handed bat out of the middle of the lineup.” He left open the possibility of internal improvements but noted they’re “certainly also engaged in conversations for players that aren’t yet in the organization.”
The top remaining free agent, righty-hitting infielder Alex Bregman, has been linked to the Sox in recent weeks. Asked whether the Sox are still involved on Bregman, Breslow pointed back to the need for right-handed hitting generally. “As you probably can imagine, I’m not going to speak about specific pursuits. I can say that right-handed bats that we feel like could play well at our park are certainly of interest to us, and we remain engaged on a number of fronts.”
Breslow added that the Red Sox aren’t looking to move Rafael Devers off the hot corner. That doesn’t rule out Bregman, who’d be a massive upgrade over Boston’s internal options at second base (i.e. Vaughn Grissom, David Hamilton, Romy Gonzalez). Switch-hitting outfielders Anthony Santander and Jurickson Profar are speculative possibilities. Pete Alonso may be the best unsigned right-handed hitter, but he’d be a tough roster fit unless the Sox deal Casas or can offload most of the Yoshida contract.
Details On Mariners/Red Sox Trade Talks
The Mariners and Red Sox have been linked together in trade rumors for the better part of a year, including reports from earlier this winter that Seattle turned down Boston’s offer of Triston Casas for either Bryan Woo or Bryce Miller. Another intriguing deal involving Casas was at least discussed between the two sides, as MLB.com’s Mark Feinsand reports that the Sox weren’t willing to agree to a deal that would’ve seen Casas swapped in exchange for Luis Castillo. The Red Sox were only open to such a trade if Masataka Yoshida was included along with Casas.
Yoshida signed a five-year, $90MM deal with the Red Sox in December 2022, back when Chaim Bloom was still Boston’s chief baseball officer. The contract greatly exceeded what Yoshida was expected to land in his entry into North American baseball, and once Craig Breslow took over Boston’s front office last winter, it didn’t take long before Yoshida’s name began to surface in trade rumors. Yoshida is still owed $54MM over the final three seasons of that deal, plus he underwent shoulder surgery in October, though he is expected to be recovered in time for Opening Day.
Since Yoshida’s contract has become the central talking point of his MLB career, his salary tends to obscure the fact that he has posted decent numbers over his two seasons in the Show. Yoshida has hit .285/.343/.433 and 25 home runs over 1001 plate appearances, translating to a 112 wRC+. That production has ticked upwards against right-handed pitching, as the lefty-swinging Yoshida naturally has better splits against righties (.810 OPS in 749 PA) than lefties (252 PA). Known for being a very disciplined hitter during his time in Japan, Yoshida has been one of baseball’s toughest batters to strike out during his time with the Red Sox.
For all of Yoshida’s contact, however, he hasn’t delivered much in the way of hard contact or power numbers. He has also posted subpar walk rates, and public defensive metrics didn’t like his glovework over 713 1/3 innings as a left fielder in 2023. The Red Sox responded to the fielding struggles by limiting Yoshida almost exclusively to DH duty in 2024, a decision that reportedly didn’t please the 31-year-old.
Since the Mariners could use a left-handed bat and basically hitting help of any kind, Yoshida might have some appeal on paper to Seattle. That said, Randy Arozarena is set to play left field and Mitch Haniger is already slated to take on the bulk of DH at-bats, so Yoshida would again likely be limited to a platoon DH role in the Mariners’ lineup. It is also easy to imagine what the M’s had little to no interest in taking Yoshida’s contract off Boston’s hands, as reports have indicated that the Mariners might only be open to moving Castillo in order to clear his salary from the books.
Castillo is owed $68.25MM in guaranteed money from 2025-27, plus a $25MM vesting option for 2028 that becomes guaranteed based on health, and if Castillo tosses at least 180 innings during the 2027 season. Trading Castillo and taking back Yoshida would represent only $39.25MM of savings for the Mariners’ payroll, which the M’s probably didn’t view as worthwhile even with the bigger benefit of obtaining a controllable young slugger like Casas. Seattle president of baseball operations Jerry Dipoto has publicly stated that trading from the rotation is a “Plan Z” option given how much the Mariners value their elite pitching staff, and if the M’s did budge on moving a starter, taking back an unwanted contract as salary offset is surely not on Dipoto’s radar.
It seems increasingly clear that the Sox are ready to move on from Yoshida, yet naturally it will be tricky in getting another team to absorb anything more than a fraction of his $54MM remaining salary. Attaching Casas or another young player to Yoshida in a trade package would be a significant sweetener, even it could also be viewed as something of a waste of a trade asset to give up young talent as part of a salary dump. While $54MM obviously isn’t a drop in the bucket, Yoshida’s contract isn’t all that onerous for a big-market club and a traditional big spender like the Red Sox, plus their estimated $212MM luxury tax number for 2025 is well under the $241MM tax threshold.
That said, the Red Sox have also exceeded the tax line just once in the last five years, as ownership has made a clear mandate to scale back the team’s spending. This hasn’t stopped Breslow from making some significant moves, though Boston’s pitching acquisitions this winter (i.e. trading for Garrett Crochet and signing Walker Buehler and Patrick Sandoval) came with a pretty limited financial cost. The Sox have also been linked to such major free agent names as Juan Soto, Max Fried, Corbin Burnes, Teoscar Hernandez, even if those players ultimately ended up signing elsewhere.
The Mariners and Red Sox have been seen as natural trade partners, as Seattle’s pitching depth and need for hitting dovetails with Boston’s rotation needs and surplus of position players. Considering the quality of the Mariners’ arms, it is safe to guess the Sox would still be open to adding a Seattle starter if an acceptable deal could be lined up, but the two clubs have been unable to find a match after at least a year of on-and-off trade talks.
Mariners Receiving More Trade Calls On Luis Castillo
Over the weekend, The Boston Globe’s Alex Speier reported that the Mariners were willing to entertain offers on Luis Castillo. Trade chatter has picked up in the few days since then. Daniel Kramer of MLB.com writes that the M’s have received a higher volume of trade calls since Max Fried agreed to an eight-year deal with the Yankees on Tuesday.
Castillo, who turns 32 today, seems to be the one member of the Seattle rotation who’ll be available. President of baseball operations Jerry Dipoto has continuously shot down the idea of trading from his young quartet of Logan Gilbert, George Kirby, Bryan Woo and Bryce Miller. The M’s reportedly rebuffed the Red Sox when Boston floated a framework of Triston Casas for one of their young starters.
Jon Morosi of the MLB Network suggested yesterday that the Red Sox and Mariners remained in conversations about Seattle’s starting pitching. Boston is probably unwilling to give up Casas for Castillo, however. To that end, Speier relayed last night that a source informed him there was no traction on a deal that would involve those two players.
While Castillo is a less appealing target than Seattle’s controllable arms, he should have positive trade value in his own right. He’s coming off another productive season. Castillo started 30 times and worked to a 3.64 earned run average over 175 1/3 innings. He punched out 24.3% of batters faced against a solid 6.5% walk percentage.
That’s a slight step back from his typical production, as he combined for a 3.47 ERA with a 26% strikeout rate over the preceding three seasons. Even if this wasn’t his best year, Castillo looks the part of a mid-rotation starter. He has topped 150 innings in each of the last six full seasons. Castillo’s fastball sits in the 95-96 MPH range. He still has a better than average strikeout and walk profile.
The differentiators between Castillo and his rotation mates are his contract and age. He’s signed for three more seasons at $22.75MM annually. The deal contains a ’28 vesting option valued at $25MM if Castillo reaches 180 innings in 2027 and finishes that year healthy. There’s some protection for the team in the event he suffers a significant arm injury. If Castillo requires surgery to repair the UCL in his throwing elbow and misses more than 130 days, there’d be a conditional $5MM club option for 2028.
Leaving the options aside, the contract has $68.25MM in guarantees for his age 32-34 seasons. That’s probably a little less than what he’d make if he were a free agent this offseason. Castillo is more consistent than Yusei Kikuchi, who got $63MM going into his age-34 season. He has similar numbers to Nathan Eovaldi, who just inked a $75MM deal for ages 35-37.
One complicating factor: Castillo’s deal includes a full no-trade clause through the end of next season. The trade protection goes away at the end of the year (though he would receive a $1MM assignment bonus if he’s traded after 2025). Kramer writes that the Mariners have informed the righty that they’re fielding more interest. The report doesn’t shed any light to which teams, if any, Castillo would approve a trade.
If he’s amenable to moving, the Mariners should be able to offload most or all of the contract while netting a legitimate return. A potential cornerstone bat like Casas is a stretch, but it’s reasonable to expect some kind of immediate lineup help. It’d also open budgetary space for the front office to add to the offense in free agency. Ryan Divish and Adam Jude of the Seattle Times have reported that the M’s are working with around $15-20MM in payroll room; Kramer suggests the same in today’s report at MLB.com. Pushing that closer to $40MM would open a lot more opportunities for Dipoto and his staff to strengthen the corner infield.
It would be a notable hit to their rotation. Much is made of Seattle’s young starting pitching, deservedly so. The talent at the top does obscure a general lack of depth beyond their excellent front five, however. Emerson Hancock hasn’t shown much at the MLB level despite his billing as a former sixth overall pick. He has a 4.71 ERA with a 14.3% strikeout rate in 15 big league starts.
Hancock and soft-tossing lefty Jhonathan Diaz are the top depth options on the 40-man roster. The Mariners didn’t need to rely on either pitcher much in 2024. Their front five combined for all but 13 starts all season. Even if they bring back their entire rotation, it’s unlikely they’ll be quite so fortunate from an injury perspective. Trading Castillo would almost certainly necessitate a rotation acquisition, either in that trade or via subsequent free agent pickup. One need only look at how quickly the Marlins’ starting pitching has been depleted over the past two seasons as an example of the risk for teams in believing they have a rotation surplus. That’s no doubt a factor in Seattle’s general unwillingness to listen on their younger arms.
Mariners Turned Down Triston Casas Trade Offer From Red Sox
The Mariners’ pitching depth over the last few seasons has drawn many teams into trade talks and it was almost exactly a year ago that reports surfaced about Boston’s interest in the Seattle rotation. Nothing materialized between the two teams then, but Ryan Divish and Adam Jude of the Seattle Times report that earlier this offseason, the Red Sox offered first baseman Triston Casas for either Bryce Miller or Bryan Woo. However, these “exploratory talks” then “didn’t progress any further,” as the M’s don’t have interest in trading from their rotation unless it is something of a last resort.
Given the contrasting strengths and weaknesses of the Mariners and Red Sox, a pitching-for-hitting swap would seem like an ideal answer to both team’s needs. While Miller or Woo might not be precisely the kind of ace the Sox are looking for to reinforce their rotation, obviously both are talented young arms with upside and team control — neither Miller or Woo is eligible for arbitration yet, and both are controlled through the 2029 season. Likewise, Casas is controlled through 2028 and has already shown glimpses of his potential at the MLB level.
Seattle president of baseball operations Jerry Dipoto has consistently turned down past offers for Miller, Woo, George Kirby, Logan Gilbert, and Luis Castillo. Recent reports suggest that the M’s are at least open to hearing what teams have to say about Castillo (the oldest and highest-paid member of the rotation), but Divish and Jude write that “the Mariners….are not actively shopping Castillo.”
Nothing is stopping Dipoto from hearing what teams might have to say, just in case someone steps forth with an offer too good to refuse. However, Dipoto told Divish and other reporters today that “our initial reluctance to any type of deeper discussions on trading starting pitching has probably resulted in a lot fewer phone calls than we’ve usually fielded to this point in the offseason.”
The result is perhaps something of a stalemate, as the Mariners are waiting for rival teams to lower their asking prices and other clubs are waiting for the M’s to become more open to the idea of trading from the rotation depth. Things could evolve once some free agent pitchers come off the board, or perhaps if the Mariners themselves added a pitcher in the form of Roki Sasaki. While virtually every team in baseball will be making an appeal to the Japanese ace now that his posting window is officially open, Seattle’s track record with both pitching development and star Japanese players would seemingly put the M’s move above most teams in the bidding process.
In the interim, it seems as though the Mariners will continue to focus on trying to trade from its minor league depth, except as Dipoto notes, “it’s the time where prospects aren’t a driver, where just about everybody is focused on major league players. And I don’t know why that seems different to me now than it usually does, and maybe that too changes in a week or two with the free agent market really opening up.”
Since shortstop J.P. Crawford is the only established member of the Mariners’ infield, landing a promising first base talent like Casas would go a long way towards shoring up the infield and the shaky lineup as a whole. That said, the Mariners have at least a part-time first base option already in Luke Raley, who looks to be getting a good chunk of playing time against right-handed pitching.
Since the M’s have been linked to such second or third base trade candidates as Nico Hoerner or Alec Bohm, it could be that Seattle might be trying to address one of those positions first before turning to the comparatively easier-to-fill position of first base. An industry source told Divish and Jude that the Mariners could look into trying to add a third team into talks with the Cubs about Hoerner, perhaps to help cover some of the money owed in the remaining two years of Hoerner’s contract.
From Boston’s perspective, trading Casas wouldn’t necessarily create a vacancy at first base. Rafael Devers is a subpar defender at third base, and reportedly the Sox have at least considered moving him to first base in order to open up the hot corner either for one of Boston’s up-and-coming infield prospects, or perhaps for a big free agent like Alex Bregman. This remains a speculative topic for now, as manager Alex Cora told reporters (including Pete Abraham of the Boston Globe) today that he hasn’t spoken with Devers about a position change, and Cora in fact praised Devers’ third base work in 2024 as “outstanding.”
Then again, there is no shortage of gamesmanship going on during the offseason, as it was just last month that Red Sox chief baseball officer Craig Breslow downplayed the idea of trading Casas. Reports then surfaced this past weekend that the Sox were considering the possibility of dealing Casas for pitching, and this apparent offer for Miller or Woo only reinforces the idea that Casas is far from an untouchable part of the Red Sox roster. Of course, this also isn’t to say that Casas is going to be moved for anything less than a premium return.