Red Sox Notes: Durbin, Infield, Coulombe
The Red Sox have told Caleb Durbin he’ll be the primary third baseman, the infielder told reporters (including Tim Healey of The Boston Globe). Things had clearly been trending in that direction throughout camp, though manager Alex Cora held off on making any formal declarations.
Durbin remains at the position where he started 119 games for the Brewers last year. He’d made three starts at second base for Milwaukee. Durbin started a trio of games at the keystone against 10 starts at third base this spring.
The 26-year-old is coming off a third place finish in NL Rookie of the Year voting. He stole 18 bases and connected on 11 homers with a .256/.334/.387 line across 506 plate appearances. The Red Sox acquired him last month in a six-player trade built around Durbin and left-hander Kyle Harrison, who has a good chance to open the season in Milwaukee’s rotation. He has made a strong impression on his new team in camp, batting .394 with five walks and only three strikeouts over 40 plate appearances.
Cora said the Sox prefer to have Durbin playing one position rather than bouncing around the infield. Locking him in at the hot corner leaves second base as the spot up for grabs. Marcelo Mayer has been the favorite throughout the spring. The Red Sox have yet to commit to carrying Mayer on the Opening Day roster after he hit .228/.272/.402 with a 30% strikeout rate in his first 44 MLB games.
Isiah Kiner-Falefa and Andruw Monasterio (who came over from Milwaukee in the Durbin trade) would be the alternatives if the Sox want Mayer to open the season in Triple-A. Kiner-Falefa and Monasterio fit best as utility players. They’re each right-handed hitters and could take short side platoon bats if the Sox want to keep the lefty-hitting Mayer away from tough southpaws.
Romy Gonzalez could be back in that role midseason, but he’ll miss at least the first two months. Gonzalez underwent arthroscopic surgery on his left shoulder last week. The Sox placed him on the 60-day injured list when they finalized their $1MM free agent deal with lefty reliever Danny Coulombe.
Coulombe had been a Sox target dating back to the Winter Meetings. The team wanted a more established player than Jovani Moran to serve as their top lefty bullpen arm in front of closer Aroldis Chapman. They ultimately added Coulombe for a guarantee marginally above the $780K league minimum, though his deal was initially going to be a little pricier.
Chris Cotillo of MassLive reports that the Red Sox had agreed to terms with Coulombe at a higher number before flagging something in the medical review process. Jen McCaffrey and Ken Rosenthal of The Athletic added specifics, reporting that it would have been a $2.25MM base salary with $750K available in appearance-based incentives.
Coulombe’s actual deal comes with the same appearance incentive package. It also includes up to $1.25MM in roster bonuses, as first reported by The Associated Press. He’d earn $250K apiece at 30, 60, 90, 120 and 150 days on the active roster or MLB injured list — so long as any IL stint isn’t related to his pitching arm.
In each case, the maximum value of the contract would be $3MM. If Coulombe stays healthy and holds his roster spot all year, he’ll come out just as well as he would have if not for the health concern. It’s not clear what specifically the medical staff flagged, though it’s evidently related to his arm in some form. In 2024, Coulombe underwent surgery to remove bone chips from his elbow. He missed time in May and June last year with a forearm strain and had a minimal IL stay in September due to shoulder fatigue.
Red Sox Sign Danny Coulombe
The Red Sox announced the signing of lefty reliever Danny Coulombe to a one-year deal. Boston placed utilityman Romy Gonzalez on the 60-day injured list in a corresponding move. Coulombe, a client of ALIGND Sports Agency, is reportedly guaranteed $1MM.
Coulombe lands a big league contract for his age-36 season. The southpaw is coming off an excellent 2.30 earned run average across 43 innings between the Twins and Rangers. Coulombe punched out an above-average 24.4% of batters faced behind an excellent 13.1% swinging strike rate.
It was the third consecutive sub-3.00 ERA showing for the veteran reliever. Coulombe’s age and lack of velocity have nevertheless limited him to a series of modest one-year contracts. With a fastball that checks in around 90 mph, Coulombe leans most heavily on a mid-80s cutter. It’s a relatively platoon neutral profile, though he was more aggressive in attacking the strike zone against left-handed hitters.
Assuming he’s able to ramp into game shape within the next two weeks, Coulombe will slot into Alex Cora’s middle relief group. Boston was light on left-handed bullpen help in front of Aroldis Chapman. The out-of-options Jovani Morán and trade pickup Tyler Samaniego, who has yet to make his MLB debut, are the other lefty relievers on the 40-man roster. Coulombe should raise the floor over the less established southpaws.
Boston still has up to three bullpen spots for grabs. Morán’s lack of options could give him a leg up on one of those. Rule 5 pick Ryan Watson can’t be optioned but seems a longer shot to break camp after giving up six runs in as many innings this spring.
Gonzalez will be out at least until late May. The Sox announced that the righty-hitting utilityman underwent an arthroscopic debridement procedure on his left shoulder. Chris Cotillo of MassLive reports that it’s a cleanup surgery that could come with a 2-3 month recovery timeline. Gonzalez should be back midseason to reprise his role as a short side platoon bat.
Ken Rosenthal of The Athletic first reported Coulombe and the Red Sox had a major league deal. Chris Cotillo of MassLive reported the $1MM salary.
Image courtesy of Jerome Miron, Imagn Images.
Red Sox Targeting Left-Handed Bullpen Help
The Red Sox are scouring the bullpen market for free agent southpaws, and MassLive.com’s Chris Cotillo reports that Tim Mayza and Cionel Perez are two of the left-handers on the team’s radar. Boston has also maintained interest in Justin Wilson and Danny Coulombe, as Cotillo initially reported last month.
Wilson is the most known quantity for the Sox, as he posted a 3.35 ERA, 27.5% strikeout rate, and 9.7% walk rate over 48 1/3 innings out of the Boston pen in 2025. While the walk rate was on the high side and Wilson’s fastball velocity dropped from 95.5mph in 2024 to 94.5mph last year, it was still a very solid season for Wilson, and a sign that he is now fully recovered from the injuries that basically erased his entire 2022-23 seasons.
One complication for the Red Sox and any other suitor pursuing Wilson is that the veteran isn’t entirely committed to pitching in 2026. According to The Athletic’s Ken Rosenthal and Will Sammon, Wilson wants “a fair deal with a legitimate World Series contender” and is willing to hang up his cleats after 13 Major League seasons if his demands aren’t met.
As Cotillo notes, Wilson and his agents at ACES could be using the retirement threat as leverage in contract talks. That said, it also isn’t out of the question that Wilson is nearing the end of the line, after turning 38 years old last August. Another one-year guarantee seems likely given Wilson’s age, and he is undoubtedly looking for a raise on the $2.25MM guarantee he received from the Red Sox on his deal for the 2025 campaign.
The Sox have seen plenty of Mayza and Perez over the years in AL East battles. Mayza spent his first seven MLB seasons with the Blue Jays and Yankees before pitching with the Pirates and Phillies in 2025, and Perez has worked out of the Orioles’ bullpen from 2022-25. Either pitcher could be had on a one-year contract and perhaps not even a guaranteed big league deal, as Mayza and Perez are both looking to bounce back from rough 2024-25 seasons.
Mayza (who turns 34 next week) had a 3.78 ERA over only 16 2/3 innings in 2025, as a lat strain and a teres major strain kept him on the injured list for much of the year. He likely would’ve been a deadline trade candidate if healthy, and the Pirates put him on the waiver wire at the end of August, with Philadelphia claiming the veteran to add bullpen depth for the stretch run. Mayza had only a 4.91 ERA in his eight games and 7 1/3 IP with the Phils, and he wasn’t included on their playoff roster.
Perez seemingly broke out with a tremendous 1.40 ERA over 57 2/3 relief innings for Baltimore in 2022, but his results have steadily declined over the past three seasons. The bottom completely fell out for Perez last year, as he had an 8.31 ERA and almost as many walks (18) as strikeouts (21) over 21 2/3 innings. Perez hasn’t pitched in the majors since late May, when the Orioles designated the lefty for assignment and then outrighted him off the 40-man roster.
Since the start of the 2022 season, Coulombe has a 2.38 ERA — the ninth-lowest ERA of any pitcher who has tossed at least 130 Major League innings (Coulombe has 136 1/3 IP). A 26% strikeout rate and 8.1% walk rate support this excellent bottom-line number, though Coulombe struggled after being dealt from the Twins to the Rangers at last year’s trade deadline.
Coulombe turned 36 in October so he’ll likely be limited to one-year offers as well this winter, but he is still drawing a good deal of interest. Rosenthal and Sammon write that five teams are in on Coulombe, which may or may not include the Red Sox.
Aroldis Chapman is the top southpaw in Boston’s bullpen, but with Chapman set to operate as the closer, the Sox are in need of at least one experienced left-hander to work in a more situational capacity. Jovani Moran projects as the top non-Chapman option amongst Boston’s current bullpen mix, but Moran has a 5.44 ERA over 46 1/3 innings since the start of the 2023 season, and he missed most of the last two years recovering from Tommy John surgery.
Chris Martin Planning To Pitch In 2026
In September 2024, Chris Martin said that he was “95%” sure that 2025 would be his final season before retirement. It appears as that five percent chance of a return has now grown into a reality, as MassLive.com’s Chris Cotillo reports that Martin is planning to return in 2026 for his 11th MLB season. The Red Sox have interest in Martin for what would be a return engagement between the two sides, as Martin pitched for Boston during the 2023-24 seasons.
Martin spent the 2025 season with the Rangers on a one-year, $5.5MM deal, and the fact that the Arlington native turned down larger offers from the Red Sox and other teams to join the Rangers only added to the narrative of what seemed to be a farewell season. The right-hander delivered yet another strong season, posting a 2.98 ERA, 24.7% strikeout rate, and an elite 4.6% walk rate over 42 1/3 innings out of the Texas bullpen.
For the second straight season, Martin made multiple trips to the injured list. The righty missed time due to right shoulder fatigue, a left calf strain, and (most troublingly) thoracic outlet syndrome, with the TOS diagnosis emerging in September. Since the assumption was that Martin was retiring, there wasn’t any word on whether or not Martin underwent TOS surgery, but it would appear he is foregoing the procedure or his diagnosis wasn’t serious enough to require surgery.
Between the TOS situation, Martin’s other recent injuries, or the simple fact that he turns 40 in June, there is certainly some question about whether Martin can continue to defy Father Time. That said, Martin is still one of baseball’s best control pitchers and he is still getting strong results, so it makes sense that he would still want to keep playing as long as he still has gas in the tank.
Since he pitched for the Red Sox so recently, Boston has plenty of direct knowledge of Martin’s health, and the team is therefore ideally suited to perhaps manage Martin’s usage in order to keep him as healthy as possible in 2026. A one-year deal for Martin on a modest salary wouldn’t represent much of a risk for the Red Sox, and the upside is high if Martin can stay off the IL and keep posting his usual numbers. The Sox are known to be looking for experienced bullpen help, and Cotillo reported yesterday that other former Boston hurler Justin Wilson is another reunion candidate, plus left-hander Danny Coulombe drawing interest.
Shawn Armstrong Hoping To Return To Rangers
Free agent reliever Shawn Armstrong is coming off a career-best season with the Rangers and is hopeful of returning to Texas this offseason, per Jeff Wilson of DLLS Sports. Wilson adds that the 35-year-old Armstrong is “likely” seeking a two-year deal, which comes as little surprise given the quality of the season he just had.
The journeyman Armstrong has pitched for four teams in the past two seasons and eight in his big league career. Seeking out some more certainty and stability is understandable, particularly on the heels of a year in which he posted a career-high 74 innings with a sparkling 2.31 ERA. Armstrong punched out 26.1% of his opponents, though his 10.3% swinging-strike rate and 23.3% opponents’ chase rate don’t necessarily support a return to that level of bat-missing. The right-hander’s 7% walk rate was also strong, however, and opponents averaged just 88 mph off the bat against him with a paltry 34.2% hard-hit rate.
Armstrong has had a tumultuous career in terms of year-to-year results. He’s pitched at least eight MLB frames in each of the past 11 seasons but has had trouble sticking in one spot and repeating his best seasons. His ERA marks fluctuate wildly on a year-to-year basis, but in the aggregate, Armstrong has been a quality big league reliever. In 421 1/3 frames, the former 18th-round pick has turned in a 3.82 ERA with a 24.3% strikeout rate and 7.8% walk rate. That includes a 2.94 ERA over the past three seasons, though that’s broken down in the form of a 1.83 ERA in 2023, a 4.86 mark in 2024 and this past season’s 2.31 level.
In terms of velocity, Armstrong topped out with a 95.3 mph average fastball back in 2022. He was down to 93.5 mph in 2025, but that mark was slightly better than last year’s 93.3 mph mark. As with his run-prevention numbers, Armstrong’s velocity readings have oscillated over the years. He complements his four-seamer with a cutter, sinker and slider, using the four at similar clips (between 23.4% and 29.1%).
The Rangers entered the 2024-25 offseason in desperate need of a bullpen overhaul. They achieved that goal almost exclusively via one-year deals in free agency. Beyond trading Nathaniel Lowe for Robert Garcia, Texas signed Armstrong, Chris Martin, Hoby Milner, Luke Jackson and Jacob Webb to one-year contracts. All of those deals, other than Jackson, paid off handsomely. It was an impressive run of bargain-level success stories, but because Texas operated primarily in the one-year deal bin, the Rangers watched nearly their entire bullpen hit free agency this offseason. They’ll need to similarly restock the shelves this offseason, and replicating that level of success will be a tall order.
Whether Texas will shell out the type of money necessary to retain Armstrong at peak value is entirely unclear. The Rangers haven’t been shy about the fact that payroll is going down. They already traded the final three seasons of Marcus Semien‘s contract for five years of Brandon Nimmo, who has a lighter annual luxury-tax hit. Nimmo said he only agreed to waive his no-trade clause with the Mets after talking to Rangers president of baseball ops Chris Young and being assured that Texas is not heading into a rebuild. Be that as it may, the Rangers are spending less.
Wilson speculates that if Armstrong is seeking a two-year deal similar to the one signed by former Rangers bullpen-mate Phil Maton — the Rangers added Maton and Danny Coulombe at the trade deadline — that might be too steep. Maton landed two years and a total of $14.5MM with the Cubs. He adds that both Milner and Coulombe live in the area and thus might be more amenable to signing back in Texas at slightly on affordable deals.
Rangers Acquire Danny Coulombe
The Rangers are acquiring left-hander Danny Coulombe, according to a report from Jeff Passan of ESPN. The club subsequently announced the move, with left-handed pitching prospect Garrett Horn headed to the Twins in exchange for Coulombe.
Coulombe, 35, made his big league debut back in 2014 with the Dodgers. He was a fairly pedestrian middle reliever with the Dodgers and A’s throughout his 20s, and posted a 4.27 ERA and 4.09 FIP across his first five seasons in the majors before being outrighted off the A’s roster back in 2018. He spent the 2019 season in the minors and re-emerged with the Twins during the 2020 campaign. Since then, he’s looked like an entirely different pitcher with a 2.40 ERA and 2.96 FIP across 161 1/3 innings of work between the Twins and Orioles.
Coulombe has not only avoided taking a step back as he’s aged, but he’s actually looked better than ever in his mid-30s. Over the last three seasons, Coulombe has posted a 2.17 ERA with a 2.59 FIP while striking out 27.6% of his opponents and walking just 5.9%. He’s paired that quality strikeout stuff and strong command with a knack for missing barrels with a minuscule 4.5% barrel rate to go with a 36.2% hard-hit rate, and his 3.07 SIERA in that time is on-par with top-shelf leverage relievers like David Robertson and Emmanuel Clase. This year, he’s been even better, with a microscopic 1.16 ERA and 1.96 FIP in 31 innings of work for Minnesota.
That’s a massive addition to a Rangers bullpen that has enjoyed solid seasons from players like Chris Martin and Robert Garcia. The Rangers weren’t hurting for bullpen help this season as they have been in previous years, but in a season where their offense has under-performed across the board and their rotation is stacked with elite options further strengthening the relief corps is an understandable path to take.
Coulombe was surely an extremely attractive piece for the Rangers in part because of his bargain salary. Coulombe is making just $3MM total this year, meaning the Rangers will have to pay him only around $1MM for the remainder of the season. That’s a crucial factor for a club that has remained stalwart in its desire to duck under the $241MM luxury tax threshold this year. Texas is just barely under that threshold at this point, with RosterResource suggesting they have a payroll of just over $235MM for luxury tax purposes. That’s likely slightly below where they’ll ultimately end up given the possibility of contract bonuses and incentives that will impact the final line.
As for the Twins, they’ll receive a young lefty pitcher as they continue their fire sale. A sixth-round pick in the 2024 draft by the Rangers last year, Horn has made nine starts between rookie ball and the Single-A level this season. The 22-year-old has posted a strong 2.92 ERA across 24 2/3 innings of work with a 35.4% strikeout rate, though that dominance isn’t exactly unexpected for a 22-year-old in the lowest levels of the minor leagues. Still, Horn is an intriguing addition for a Twins farm system who Baseball America ranked as the #25 prospect in the Texas system this year. His mid-90s fastball is impressive, but his curveball is viewed as average at best and his changeup is completely undeveloped. He’s unlikely to be more than a reliever in the majors unless his secondary pitches develop substantially, but mid-90s velocity from the left side has a place in the majority of big league bullpens.
Latest On Twins’ Deadline Plans
The Twins have already moved Chris Paddack and Jhoan Duran, but they’re expected to remain active on the selling front right up until this afternoon’s deadline. Ken Rosenthal of The Athletic reports that as of last night, Minnesota was far more focused on negotiations pertaining to relievers Danny Coulombe and Brock Stewart than on anything involving top starter Joe Ryan, who still seems like a long shot to move. Meanwhile, Bobby Nightengale of the Minneapolis Star-Tribune reports that the Twins have had about six clubs looking into utilityman Willi Castro and haven’t ruled out trading righty Griffin Jax even after moving Duran — but the price remains extremely high.
Coulombe is one of the most straightforward trade candidates on the market. He’s a rental reliever on a clear seller who’s having a terrific season while playing on a low-cost contract. He signed a one-year, $3MM deal to return to the Twins in the offseason and has rewarded that investment with a 1.16 ERA, 25.4% strikeout rate and 7.4% walk rate in 31 innings. He’s thrived versus lefties and righties alike. It’d be a surprise if Coulombe somehow wasn’t traded before today’s deadline.
Stewart, 33, isn’t necessarily as likely to go but could have some sneaky value. He’s 33 years old and has had plenty of injury concerns in his career, including Tommy John surgery while with the Dodgers and shoulder surgery with the Twins just last year.
That said, when Stewart has been healthy in Minnesota, he’s been excellent. He’s pitched 77 1/3 innings since landing with the Twins on a minor league deal in the 2022-23 offseason, and in that time he’s posted a 2.33 ERA with a huge 31.7% strikeout rate and a 9.5% walk rate. Stewart is sitting 96.1 mph on his four-seamer this year and has run his heater up to 100 mph at times. He’s sporting an outstanding 15.1% swinging-strike rate and has a massive 16.5% mark over the past three seasons combined.
The Twins don’t need to move Stewart, who’s earning just $870K this year and has two seasons of club control remaining. However, as a reliever in his mid-30s who was originally added on a minor league deal, there’s a bit of a “found money” aspect to the hard-throwing righty. His lengthy history of arm troubles also surely has to tempt the Twins to sell high right now, while he’s performing well. Stewart isn’t going to garner headlines like Duran, Jax and other controllable arms on the relief market (e.g. David Bednar, Mason Miller), but he’s quietly posted high-end results at near league-minimum salary.
Castro feels like another surefire trade candidate today. Like Coulombe and Stewart, he was originally signed by the Twins on a minor league deal before revitalizing his career in Minnesota. He’s hitting .245/.335/.407 with 10 homers and nine steals in 344 plate appearances on the season and has slashed .250/.335/.398 in his three years as a Twin.
The switch-hitting Castro is earning $6.4MM in 2025 and is a free agent at season’s end. He’s a 28-year-old with average power and above-average speed who can handle just about any position on the field. He’s played second base, third base, shortstop and all three outfield spots in 2025, though he’s stretched defensively at shortstop or in center field and is more of a backup option than a candidate for regular playing time at those positions. Given his versatility, Castro would deepen any contending club’s bench, and he’d be a starting option for several playoff contenders. The Mariners, Yankees and Astros have all shown interest this month, though the first two of those teams have obviously added some new infield options already, which could impact their current level of interest in Castro.
With Duran out the door and Coulombe and Stewart possibly following him, a trade of Jax would really deplete the Twins’ bullpen. The Twins will remain open to the idea, it seems, but they’re not likely to deviate from their asking price. They’ve been seeking multiple top-100 prospects for both Duran and Jax. They secured a strong return for Duran (catching prospect Eduardo Tait and MLB-ready starter Mick Abel) and will hold out for the same with regard to Jax.
The 31-year-old Jax is a former third-round pick. A look at his 4.50 ERA isn’t going to turn any heads, but the right-hander posted a 2.03 ERA last season and misses bats more than nearly any pitcher in the game. His 36.4% strikeout rate is fifth in all of baseball among the 293 pitchers (starter and relievers alike) with at least 40 innings pitched this season. His 19.5% swinging-strike rate sits third, trailing only Josh Hader and Aroldis Chapman. Jax’s 1.97 SIERA ranks second in baseball, trailing only the 1.96 mark of breakout Giants reliever Randy Rodriguez.
Jax is under club control for two more years beyond the current season. He had a brutal outing yesterday — three runs without recording an out — but even including that tough day has a 3.08 ERA and 1.49 FIP in 38 innings dating back to late April. He’s the clear favorite to close games for the Twins moving forward. The Yankees are among the clubs looking into Jax, Jon Heyman of the New York Post suggests, and the Mariners have been in the mix as well.
Mariners Showing Interest In Willi Castro, Twins’ Relievers
The Mariners have already upgraded the right side of their infield with last week’s addition of Josh Naylor, and as they continue to look around the league for help at the other corner and in the bullpen, they’ve increasingly focused in on the Twins, reports Daniel Kramer of MLB.com. Seattle had interest in Willi Castro this past offseason and has again been in touch with Minnesota about the possibility of a Castro swap.
Castro, 28, would give the Mariners an option at third base while still leaving the door open for a potential addition of a prominent slugger like Eugenio Suárez. The switch-hitting Castro is versatile enough to handle second base, shortstop or any of the three outfield spots — though he’s best used as an emergency option at short or in center. He’s primarily played second base and the outfield corners for the Twins this season but has 74 innings at third base (532 in his career) and 26 innings at short (1213 career innings).
The versatile Castro is in his final season of club control and earning $6.4MM. He’s hitting .252/.343/.418 with 10 homers, 15 doubles, a pair of triples and nine steals (in 12 tries). It’s Castro’s third straight productive season since being non-tendered by the Tigers and signing a minor league deal in Minnesota. In two-plus years with the Twins, he’s slashed .251/.336/.401 while playing all over the diamond.
Castro has been solid enough at the plate that even absent a more notable acquisition at the hot corner, he’d still be a marked improvement over in-house options on his own. Rookie Ben Williamson has been playing third base for much of the season in Seattle. He’s turned in sharp defense but carries an anemic .256/.293/.315 batting line in 289 turns at the plate. The hope had been that Jorge Polanco could play third base for the M’s after re-signing this past offseason, but he’s been limited to DH work for much of the season after undergoing knee surgery following the 2024 campaign and playing through a side/oblique issue for much of the early portion of the current season.
On top of their need in the infield, the Mariners have been canvassing the trade market for high-leverage relief help. Kramer notes that hard-throwing righties Jhoan Duran and Griffin Jax stand out as on-paper fits and the type of arms Seattle has been seeking. Both are in their first arbitration season and controlled through 2027. Duran is earning $4.125MM this season. Jax is being paid $2.365MM.
While Duran is the more famous of the pair given his status as Minnesota’s closer and his possession of one of MLB’s hardest fastballs, both pitchers are viewed within the industry as elite bullpen options. Duran carries a career 2.47 ERA and 30.6% strikeout rate, though this year’s 25.7% mark (while still strong) is a career low. He’s averaging 100.2 mph on his four-seamer and complementing that blistering offering with a splitter/sinker hybrid (“splinker”) that sits 97.5 mph.
Duran may be more well-known, but Jax is arguably even more appealing. Beyond his lower salary, he boasts superior strikeout and walk rates, sitting at 36.9% and 6.7%, respectively. He’s been dogged by a .371 average on balls in play, which has helped to inflate Jax’s ERA to 3.91, but metrics like FIP (2.00) and SIERA (1.94) rank him among the game’s very best relievers. Among the 651 pitchers (starters and relievers alike) to throw even five innings in the majors this year, Jax is tied with Aroldis Chapman for the fourth-best swinging-strike rate (19.8%). Josh Hader, Mason Miller and Fernando Cruz are the only pitchers with higher marks.
Adam Jude of the Seattle Times writes that while the Mariners indeed covet Duran and/or Jax — as well as Castro — there’s very little chance the M’s could pry away both Castro and one of the Twins’ top bullpen arms in the same trade. ESPN’s Jeff Passan reported last week that the Twins were seeking multiple top-100 prospects for either Duran or Jax individually. Jude hears similarly. Adding Castro, one of the more appealing rental players on the market, would only drive the asking price up even further.
Jude suggests left-hander Danny Coulombe as one viable alternative in the Minnesota bullpen. He’s pitched 31 innings this year and logged a pristine 1.16 ERA with a 25.4% strikeout rate and 7.4% walk rate. The 35-year-old southpaw signed a one-year, $3MM deal with the Twins over the winter — his second stint in Minnesota — and is a free agent at season’s end.
Speculatively, the Mariners could also look into righty Brock Stewart. The 33-year-old is making just $870K this season and, like Duran and Jax, is controlled through 2027. He’s been excellent since signing a minor league deal with the Twins three years ago but has also missed considerable time due to injury. Stewart touts a 2.33 ERA, 31.7% strikeout rate and 9.5% walk rate in 77 1/3 innings dating back to Opening Day 2023. Stewart is averaging 96.1 mph on his four-seamer, and while his 15.1% swinging-strike rate isn’t quite at Jax’s elite level, it’s tied with San Diego’s Jason Adam for 28th among 373 big league pitchers who’ve pitched at least 30 innings this year.
The Mariners are well-positioned to land virtually any trade target they covet — it’s just a matter of how much they’re willing to thin out what’s regarded as one of baseball’s top farm systems. Seattle has eight of Baseball America’s top-100 prospects. Minnesota isn’t embarking on a full rebuild but rather aiming to retool and contend again in 2026, so they’d probably prefer prospects closer to big league readiness for their top trade chips (though they did settle on a 19-year-old catching prospect in yesterday’s Chris Paddack trade).
Yankees Pursuing Righty-Hitting Infielder, Bullpen Help
The Yankees made one of deadline season’s biggest moves so far, acquiring third baseman Ryan McMahon from Colorado for a pair of pitching prospects. That addressed their most glaring need on the position player side. It nevertheless might not be their only acquisition on the dirt.
Chris Kirschner of The Athletic reports that the Yankees are looking to add an infielder who can hit from the right side. Kirschner specifically adds that New York is interested in switch-hitting Twins utilityman Willi Castro. He also floats Washington’s Amed Rosario as a player whom the front office has liked.
They’re two of a number of potential options. Old friends Thairo Estrada (Rockies) and Isiah Kiner-Falefa (Pirates) are short-term pieces on bad teams. The A’s Luis Urías and Baltimore’s Ramón Urías (Luis’ older brother) should each be available. The Angels could listen on switch-hitting rentals Yoán Moncada and Luis Rengifo.
Castro is the best of that group — and consequently, the one who should draw the most interest from various teams. He entered play tonight with a .257/.346/.429 slash line with 10 homers across 319 plate appearances. Castro has been a slightly above-average hitter in three consecutive seasons. He’d be a particular boost versus left-handed pitching, against whom he’s hitting .284/.341/.519. His .246/.348/.392 slash against righties is closer to average but hardly unplayable.
Minnesota is four games below .500 and five games out of a Wild Card spot. They’re open to offers on rentals. The 28-year-old Castro is playing on a $6.4MM salary for his final arbitration season. He’s not a great defensive player at any spot, but he’s able to move between second base, third base, and the corner outfield positions. He has plenty of shortstop experience as well, though he shouldn’t be playing there regularly.
If Castro fits the superutility mold, Rosario is more of a short-side platoon bat. He hits lefties well, including a .299/.333/.483 showing this season. He makes contact against right-handed pitching but almost never walks and doesn’t hit for power off righties. Rosario was a shortstop earlier in his career but is now mostly limited to second/third base. He’s playing on a $2MM salary and is an impending free agent.
The Yanks will give the majority of playing time between second and third base to Jazz Chisholm Jr. and McMahon. They each hit from the left side. Chisholm is a career .224/.286/.354 hitter against southpaws. McMahon has a lifetime .231/.307/.378 line without the platoon advantage. Oswald Peraza is their right-handed complement for now, but he hasn’t shown he can hit MLB pitching of either handedness. He’s a superior defender to Castro and Rosario but hasn’t provided anything with the bat. Peraza is out of options, so the Yankees would need to expose him to waivers before they could send him to the minors. If they acquire a right-handed hitting infielder, that’d almost certainly squeeze him off the roster.
Kirschner adds that the Yankees — like virtually every contender — are also pursuing bullpen help. He lists Pittsburgh’s David Bednar and the Minnesota trio of Jhoan Durán, Griffin Jax and Danny Coulombe among the presumably dozens of bullpen options whom the Yanks are considering.
Durán and Jax are each questionable to move; the Twins are reportedly demanding multiple top prospects for either controllable late-game weapon. Bednar, who is playing on a $5.9MM salary and arbitration-eligible for one more season, is likely to go but would require a big return in his own right. Coulombe would come with the lowest prospect cost of that group. He’s a rental playing on a $3MM deal. Pittsburgh and Minnesota are surely getting calls from a number of teams on those pitchers (as well as the likes of Dennis Santana and Brock Stewart).
Poll: Who’s The Best Rental Reliever Available?
Virtually every contender is on the lookout for bullpen help at the deadline, and this summer should be no exception. The Dodgers, Tigers, Phillies, Yankees, Cubs, and Mets have all been connected to the relief market already this summer, and plenty of other clubs will surely be searching for upgrades to their relief corps as well. An unusual quirk of this summer’s trade market, however, is that the majority of the most frequently discussed names are elite arms controllable beyond the 2025 season. Jhoan Duran, Emmanuel Clase, Mason Miller, David Bednar, and Pete Fairbanks are just a handful of the high-end relievers with multiple years of team control who have found themselves in the rumor mill this July.
Many of those big names likely won’t be moved, however, and the ones that do get traded are likely to come with hefty price tags. For teams with less prospect capital to spend or other areas they’ll need to balance upgrading, perhaps adding rental relief help at a lower price could be a more attractive path to take. Who’s the most interesting pending free agent available to help a contender’s bullpen this summer? A look at some of the options:
Coulombe, 35, has long been one of the better left-handed setup men in the game when healthy. With that being said, for the majority of his career the southpaw has carried a hefty platoon split. He’s a career 2.13 ERA arm against same-handed pitching, but righties have managed to post a 4.14 figure against him over the years. That has limited Coulombe’s abilities as a shutdown set-up man over the years, but he’s changed that narrative with the Twins this year. Not only has he posted a microscopic 0.63 ERA in 28 2/3 innings of work, he’s done so with a 1.23 ERA and a 1.93 FIP against right-handed hitters. Those utterly dominant numbers would be welcome in any contender’s bullpen, though Coulombe’s shaky track record against opposite-handed batters and his small sample of work this year could make him less attractive than his rate numbers would otherwise imply.
Helsley was one of the most talked about trade candidates in baseball for much of last offseason, though the Cardinals ultimately opted to hold onto him. Now that the club appears to be signalling that a sell-off could be in the cards this summer, however, Helsley appears more likely to be moved than ever before. The only problem is that he’s currently in the midst of by far his weakest season since his breakout All-Star campaign in 2022. While he posted a sterling 1.83 ERA, 2.35 FIP, and 34.6% strikeout rate across his last three seasons, Helsley’s 2025 hasn’t been nearly that special. His 3.18 ERA in 34 innings of work is still 32% better than league average, but a 3.77 FIP is downright pedestrian thanks in large part to a massive drop in strikeout rate. He’s punching out just 24.8% of his opponents this year, all while walking 9.4% of batters faced. The 30-year-old still offers premium velocity and is clearly an above-average arm with plenty of closing experience, but he’s not quite the slam-dunk superstar he would’ve been this time last year.
Iglesias isn’t having an amazing season on the whole but is in a strong groove at the moment. He has a 5.12 ERA on the season but most of the damage came earlier in the year. From June 9th until July 18th, he tossed 13 2/3 scoreless innings with a 37.5% strikeout rate and 2.1% walk rate. His most recent outing was a four-run clunker, but that still leaves him with a 2.45 ERA over his past 14 2/3 innings. Though it’s not his best year, he has 235 saves and a 2.99 ERA in his decade-plus career, so he’ll certainly garner interest.
In the midst of his 16th big league season, the 37-year-old Jansen has begun to show his age with declining peripherals (4.24 FIP, 4.43 xFIP) but has generally remained as effective as ever at closing out games when looking at pure results. His 3.28 ERA across 35 2/3 innings of work has been enough to allow him to convert 17 of his 18 save chances, and virtually all of the damage he’s allowed this year was part of a six-run, two-out blow-up back on May 2. He had made eight appearances without surrendering a run prior to that outing, and since then he’s posted a 2.33 ERA and 3.02 FIP across 27 innings of work. It’s hardly reasonable to ignore that meltdown earlier this season entirely, but given Jansen’s Hall of Fame caliber track record and strong performance in every other outing this season, it’s not hard to imagine contending clubs believing he’ll be more valuable than his season-long peripherals might otherwise suggest.
The 34-year-old Matz stands out from the rest of the rental relief crowd as a hurler with plenty of starting experience who was used as a multi-inning reliever and spot starter as recently as earlier this season. His 3.29 ERA and 2.90 FIP across 52 innings of work this year are certainly impressive on paper, but a closer look at his numbers reveals some reason for pause. Since the start of May, Matz has been used exclusively in short relief and hasn’t exactly taken to the role change well with a 4.82 ERA and 3.73 FIP in 28 innings of work over his last 20 appearances. Perhaps an interested club would look at that improved peripheral and see potential, but it should be noted that Matz carries a massive platoon split this year; while lefties have been held to a .182/.222/.234 against him this year, righties have slashed a much more robust .290/.321/.435. That’s not exactly what you want from a late-inning reliever, but Matz could still provide unique value to clubs as a dominant hurler against lefties who could be stretched out for longer appearances as needed.
Other Options
The aforementioned five names are hardly the only options worth considering. Caleb Ferguson of the Pirates, Seranthony Dominguez of the Orioles, and Jakob Junis of the Guardians are among a number of set-up men in the midst of solid seasons, though none have numbers or track records quite as impressive as the group listed above. Kyle Finnegan of the Nationals has a long track record of success in the ninth inning but didn’t get much interest in free agency this winter and he now has a 4.62 ERA this year. Diamondbacks closer Shelby Miller would have a strong argument as one of the top options on this list if not for a forearm strain suffered early this month that could require surgery, though a return later this year has not yet been ruled out.
Who do MLBTR readers view as the best rental reliever available this summer? Should teams prioritize the strong track records of Helsley, Iglesias and Jansen, or the recent excellence of Coulombe? Or perhaps Matz’s flexibility to be used in multiple roles makes him most attractive of all? Have your say in the poll below:
Who's the best rental reliever available this summer?
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Ryan Helsley 57% (3,183)
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Raisel Iglesias 14% (785)
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Kenley Jansen 12% (677)
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Danny Coulombe 12% (661)
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Steven Matz 5% (298)
Total votes: 5,604