Headlines

Go To Pro Hockey Rumors
Go To Hoops Rumors

Ben Williamson

Mariners Acquire Brendan Donovan

By | at

The Mariners, Rays and Cardinals officially announced a three-team deal that sends infielder/outfielder Brendan Donovan to Seattle. The full breakdown is as follows:

  • The Mariners send infielder Ben Williamson to the Rays, as well as prospects Jurrangelo Cijntje and Tai Peete and a competitive balance round B pick (#68 overall) to the Cardinals, receiving infielder/outfielder Brendan Donovan from the Cardinals.
  • The Cardinals send infielder/outfielder Brendan Donovan to the Mariners, getting prospects Jurrangelo Cijntje and Tai Peete plus a competitive balance round B pick (#68 overall) from the Mariners, as well as receiving outfield prospect Colton Ledbetter and a competitive balance round B pick (#72 overall) from the Rays.
  • The Rays send outfield prospect Colton Ledbetter and a competitive balance round B pick (#72 overall) to the Cardinals, receiving infielder Ben Williamson from the Mariners.

A Donovan trade has felt inevitable for quite a while. The Cardinals have been leaning harder into a rebuild this winter. They tried to kick off a reset last offseason but struggled to move their veteran players with no-trade clauses and ended up mostly standing pat. With president of baseball operations John Mozeliak ceding the reins to new president Chaim Bloom after the 2025 campaign, it became clear that the club would push harder to focus on the future.

Nolan Arenado, Sonny Gray and Willson Contreras all had no-trade clauses in their contracts and seemed reluctant to approve deals in the 2024-25 offseason. As last year was winding down, they all publicly expressed a greater openness to playing for new teams in 2026. That has now come to fruition for all three. Gray and Contreras were both traded to the Red Sox, while Arenado landed with the Diamondbacks.

Donovan’s situation was slightly different. Those other three guys were all veterans making eight-figure salaries. Moving them out of St. Louis was partially about slashing the payroll and also about opening up opportunities for younger players as part of the rebuild. Donovan, on the other hand, is still in his arbitration seasons. He will make a relatively modest $5.8MM in 2026 and would be due a raise in 2027.

It wouldn’t be necessary to trade Donovan for financial reasons at that price. But with the Cards expecting their rebuild to last a few years, it made sense to make Donovan available since he’s just two years away from free agency. An extension was another possibility but Donovan is now 29, so he’ll be going into his age-31 season in his first free agent year, and it’s unclear if the Cards will be competitive by then.

Donovan was a case where the St. Louis front office wouldn’t have to worry about the contract and could focus on simply bringing back as much talent as possible. With his modest salary and inability to block trades, the Cards could scour the league to see what teams were willing to pay in terms of prospect capital. Since Donovan can play all over the diamond, with experience at all four infield positions and the outfield corners, almost any contender could fit him onto the roster.

It’s not just defensive versatility that Donovan brings to the table. In his four big league seasons, he has been remarkably consistent with a contact-based approach at the plate. His strikeout rate has been in the 12 to 15% range in each season of his career, during a time when the league average is usually around 22% or so. He has also drawn walks at a rate right around league par. He doesn’t have huge power but has hit at least 10 home runs in each of the past three seasons.

Put it all together and Donovan has a career .282/.361/.411 slash line. That translates to a 119 wRC+, indicating he has been 19% better than league average at the plate overall. Each of his four seasons has ended with a wRC+ between 115 and 127. A consistently above average hitter with an affordable salary who can capably play many different positions made Donovan a good fit for many teams and he reportedly received interest from about half the clubs in the league. He underwent sports hernia surgery in October but that doesn’t seem to have put a damper on his market and there has been no reporting to suggest he won’t be healthy for spring training.

The Mariners certainly stood out as one of the best fits, if not the very best. They went into the winter with some question marks in various positions but also potential internal solutions. They finished 2025 with Jorge Polanco as their regular second baseman and Eugenio Suárez at third. Both became free agents and have since agreed to deals with different clubs, Polanco with the Mets and Suárez the Reds.

Seattle had interest in bringing both back but it also would have been a bit awkward to sign either. Putting Polanco back at second would have blocked Cole Young. He debuted in 2025 and didn’t have immediate success, with a .211/.302/.305 line on the year. However, he may have been held back by a .247 batting average on balls in play, as his 10.9% walk rate and 18.3% strikeout rate were both quite good. The M’s presumably don’t want to give up on him just based on that initial exposure to the big leagues. Middle infield prospect Michael Arroyo is also not far off, having reached Double-A in 2025. Ryan Bliss showed some promise before he spent most of 2025 on the injured list.

At third base, the Mariners already gave some big league time to Williamson last year. He didn’t hit much but got really strong reviews for his glovework, getting credited with eight Defensive Runs Saved in 703 innings. That gave them a glove-first floor at the position.

Meanwhile, they have Colt Emerson lurking. A consensus top 20 prospect coming into 2026, he crushed High-A and Double-A in 2025, getting a late promotion to Triple-A for six games. He could be the long-term shortstop but his glovework is considered a bit behind his bat. With J.P. Crawford signed through 2026, Emerson could theoretically cover third in 2026 and then move over to short for 2027. However, he is only 20 years old and has barely reached Triple-A, so there’s no guarantee of that scenario playing out as scripted.

There’s also a bit of uncertainty in right field, where the Mariners have a cluster of guys including Víctor Robles, Dominic Canzone, Luke Raley and Rob Refsnyder. Robles was injured for most of 2025 and struggled when on the field. The other three guys have mostly found success in platoon roles, Canzone and Raley from the left side and Refsnyder the right.

Take all those situations into account and Donovan’s appeal becomes clear. His multi-positional abilities will allow the club to bounce him around depending on who else is healthy and producing. Perhaps he will start out projected at second base, since that is the position he has played most in his career. But if Young breaks out or Bliss bounces back, Donovan can be moved to third. With Williamson now leaving for Tampa, Donovan could cover the hot corner until Emerson charges forth and takes that spot. If second and third are both taken over by younger guys, then Donovan could see more time in the outfield. As injuries pop up throughout the year, the picture will change and Donovan can shift.

Donovan’s contact approach was likely also a part of the appeal. The Mariners had one of the highest strikeout rates in the majors in both 2023 and 2024, with a 25.9% rate in the former and a 26.8% clip in the latter. They made a concerted effort to get that down in 2025, dropping it to 23.3%, but that was still one of the seven highest rates out of the 30 clubs in the majors.

To get Donovan, the Mariners are dipping into their strong farm system but aren’t giving up any of their top guys. Cijntje, 23 in May, was Seattle’s first-round pick in 2024. The M’s took him 15th overall and signed him with a $4.8809MM bonus.

One of the most unique prospects, Cijntje primarily throws with his right arm but also throws with his left. He can get his fastball to the upper 90s with both arms but his lefty velocity is a tad lower. Basically, he has been working as a traditional righty starter but then occasionally switching to the left side when facing a lefty hitter. The potential outcomes with such a prospect are quite wide, as it’s never really been seen before. Pat Venditte pitched with both arms and was able to carve out a big league career from 2015 to 2020, but as a journeyman reliever.

Cijntje, on the other hand, seems capable of being a big league starter with his right arm. He posted a 3.99 ERA in 108 1/3 minor league innings last year. Baseball America recently ranked him the #7 prospect in a strong Seattle system.

Whether he would still mix in some lefty work in the long run is undetermined. Daniel Kramer of MLB.com reported yesterday that Cijntje would be mostly focusing on his work as a righty in spring training. He was going to still throw as a lefty in some bullpen work but not in games.

The Cardinals will presumably shed some light on what they have in mind for Cijntje, though the team announced him as a right-handed pitcher in their press release. Whether it’s as a switch-pitcher or a traditional righty, he will give them some extra pitching depth, which has been their main target this winter. They also added Richard Fitts and Brandon Clarke in the Gray trade, Hunter Dobbins, Yhoiker Fajardo and Blake Aita in the Contreras deal and then Jack Martinez in the Arenado swap.

Some of those pitchers are immediate candidates for big league work but that shouldn’t be the case with Cijntje. He hasn’t yet reached Triple-A and has only seven starts at the Double-A level. If the switch-pitching experiment were to continue, he should arguably require more development time than a standard prospect, since it would be such an unprecedented path that there’s no map. He won’t be Rule 5 eligible until December of 2027, so the Cards could be very patient if they wanted, especially with the major league club not being competitive in the short term.

Peete, 20, was selected 30th overall in the 2023 draft and signed via a $2.5MM bonus. He has huge tools but also big question marks. In 2025, he got into 125 High-A games. He hit 19 home runs and stole 25 bases but also struck out in 30.6% of his plate appearances. Initially a shortstop who also dabbled at second and third, the Mariners moved him to the outfield last year, mostly in center but also with a decent amount of time in left.

It’s a long-term play with wide error bars but BA recently gave Peete the #10 spot in the Seattle system. The fact that he’s already striking out at such a high rate is worrisome, as hitters generally strike out more as they climb the minor league ladder and face tougher pitching. But his outfield defense is considered strong even though he just moved there, and there’s power in the bat. The ingredients are potentially there but St. Louis will have to be patient since he’s not close to the majors and needs some refinement.

Ledbetter, 24, was a second-round pick of the Rays in 2023. He profiles as a guy who can do a lot of things well but without a standout tool. He played 123 Double-A games last year, hitting seven home runs and stealing 37 bases while playing all three outfield spots. His 9.5% walk rate and 23.9% strikeout rate were both close to normal.

For the Rays, they are giving up Ledbetter and a draft pick but presumably feel Williamson is a worthwhile near-term upgrade to the big league squad, whereas Ledbetter and the pick wouldn’t be helping the team for a few years.

As mentioned, Williamson profiles as a glove-first third baseman, but he also has minor league experience at the middle infield spots. The Rays have one of the best young third basemen in Junior Caminero, who just wrapped up a 45-homer season in his age-21 campaign. His defense wasn’t especially well regarded, so Williamson could perhaps sub in for him late in games for better glovework.

The Rays traded away Brandon Lowe but then replaced him at second base by acquiring Gavin Lux. Hitting from the left side, Lux needs a platoon partner, as he has a career .269/.344/.406 line against righties but .198/.277/.260 against lefties. Williamson is a righty and hit better against southpaws in his debut last year, so perhaps he can help the Rays shield Lux. Williamson also has options and could be sent to the minors if complementing Lux and Caminero doesn’t get him enough playing time.

Ultimately, this deal is about the Mariners making a big upgrade to their team. They just went to the ALCS in 2025 and almost made it to the World Series, before a heartbreaking loss in game seven. Donovan adds to the 2026 and 2027 teams while also giving the club the flexibility to find roles for some of their younger guys who could be long-term pieces. He doesn’t break the bank financially and didn’t require the club to part with any of its best prospects.

The Cardinals cash in a guy who wasn’t going to be much use to them during their rebuild. They’ve added some more young talent to the system and also cleared more playing time for players who could be part of the next competitive cycle, including JJ Wetherholt, Thomas Saggese, Nolan Gorman, Joshua Baez and others. They also picked up two reasonably high draft picks to add a couple more prospects in July. That’ll likely add around $2.5MM to their bonus pool as well.

Further trades are theoretically possible. Lefty reliever JoJo Romero is an impending free agent and a natural trade candidate. He has stayed with the Cardinals thus far, so perhaps they haven’t been bowled over by the offers, which could lead to him staying in St. Louis until the summer deadline. Lars Nootbaar is two years from free agency, like Donovan, but he may begin the season on the injured list due to heel surgery. He has been in some rumors but the Cards may hold him until he shows he’s healthy, then make him available in the summer as well.

Though a Donovan trade has been discussed all winter, it took most of the offseason to come together. Presumably, that’s due to the other participants in the game of musical chairs. The offseason began with free agency offering other infielders, including Suárez and Polanco but also Bo Bichette, Alex Bregman, Luis Arráez and more.

The chairs started filling up in recent weeks. The Cubs reached an agreement with Bregman in mid-January. Not long after, Bichette landed with the Mets. The Giants were reportedly making a strong push for guys like Donovan but also Nico Hoerner of the Cubs and CJ Abrams of the Nationals. Instead, they pivoted to a one-year deal with Arráez this weekend. Suárez lingered unsigned until reaching an agreement with the Reds in recent days.

After the Mariners, the Red Sox were one of the clubs most frequently connected to Donovan. They seem likely to let Marcelo Mayer replace Bregman at third but don’t have a great solution at second base. Reportedly, Donovan wasn’t considered a perfect fit because the lineup is already heavy on lefties, but they now have one less option available. Rumors have been swirling about Isaac Paredes but it’s unclear if the Astros have any willingness to deal him.

Katie Woo and Chad Jennings of The Athletic first reported that the Mariners were close to getting Donovan in what was likely a three-team trade. Jeff Passan of ESPN reported that the Rays were the third team. Bob Nightengale of USA Today reported that Tampa was expected to get Williamson. Joel Sherman of The New York Post first reported on Cijntje going to the Cards. Adam Jude and Ryan Divish of The Seattle Times first reported Peete going to the Cards. Nightengale first had Tampa sending out a prospect and a comp B pick. Sherman first reported Ledbetter’s inclusion. Nightengale then specified the full breakdown. Passan reported that the agreement was in place and that Seattle was sending the #68 pick to St. Louis.

Photos courtesy of Eakin Howard, Jeff Curry, Kevin Jairaj, Kim Klement Neitzel, Imagn Images

Looking At The Mariners’ Internal Infield Options

By | at

At the end of the 2025 season, the Mariners lost three infielders to free agency, as each of Josh Naylor, Jorge Polanco and Eugenio Suárez hit the open market. That left shortstop J.P. Crawford as the only lock for the 2026 infield. The M’s quickly pounced to bring Naylor back, signing the first baseman to a five-year, $92.5MM deal not long after free agency began.

Reuniting with Polanco and/or Suárez still seems to be on the table but second and third base are open for now. What options do the Mariners have in the system at present? Let’s take a look at the possibilities.

Cole Young

Young is a former first-round pick, with the M’s taking him 21st overall in 2022. He came into 2025 as a consensus top 100 prospect. He was promoted to the big leagues at the end of May and primarily played second base. He eventually took 257 trips to the plate but produced a tepid .211/.302/.305 line, which translates to a wRC+ of 80.

That’s obviously less than ideal but there are some reasons for optimism. Young’s 10.9% walk rate and 18.3% strikeout rate were both strong. His .247 batting average on balls in play was more than 40 points below league average. His average exit velocity of 87.6 miles per hour was subpar but his max exit velo of 114.1 mph was in the top 10% of major league hitters. Perhaps he can tap into that premium velo a bit more as he gets more exposed to big league pitching. He hit .277/.392/.461 for a 120 wRC+ in Triple-A prior to his promotion, so perhaps his uninspiring major league debut was just a blip.

Colt Emerson

One year after taking Young, the M’s were selecting one pick later in the first round. They used the 22nd overall pick in 2023 to grab Emerson. He had a big rise in 2025, playing 90 games in High-A, followed by 34 in Double-A and six in Triple-A. Between those three levels, he took 600 trips to the plate and slashed .285/.383/.458 for a 129 wRC+. He also stole 14 bases while primarily playing shortstop, plus a few games at third.

Emerson is now a consensus top 15 prospect in the whole league. His Triple-A experience is still minimal and he’s only 20 years old but the Mariners would presumably have at least some willingness to carry him on the Opening Day roster. MLB teams are generally more willing to do that with top prospects these days because of the PPI benefits. The M’s carried 21-year-old Julio Rodríguez on their roster throughout 2022. When he won Rookie of the Year, that netted the M’s an extra pick in 2023. That allowed them to select outfielder Jonny Farmelo just seven picks after taking Emerson.

The M’s presumably won’t just hand a job to Emerson. He will have to earn it in spring. Theoretically, he could take over third base in 2026. Crawford is slated to be a free agent a year from now, at which point Emerson could potentially move over to short. It’s also possible that Felnin Celesten is more of a factor by then. Celesten is considered a better shortstop defender than Emerson but he hasn’t reached Double-A yet.

Ryan Bliss

Bliss was a second-round pick of the Diamondbacks who came to the Mariners in the 2023 deadline deal which sent Paul Sewald to the desert. His 2025 season was marred by injury. First, a torn left biceps required surgery in April. He began a rehab assignment in August but then suffered a torn meniscus in his right knee. Due to that missed time, he has a .214/.287/.367 line in just 110 big league plate appearances over the past two seasons.

His minor league track record is naturally better than that. Bliss has 739 Triple-A plate appearances with a .260/.365/.453 line and 105 wRC+. He’s also huge threat on the bases with at least 50 steals in the minors in both 2023 and 2024. He has lots of minor league experience at both middle infield positions. He never had the same prospect hype as Young or Emerson but the speed and defense could make him a valuable player with even league average offense.

Ben Williamson

Williamson was a second-round pick in 2023. He generally put up good minor league numbers but with a pesky contact-based approach and very little power. He got into 85 big league games this year and hit .253/.294/.310 for a wRC+ of 76. There could be more in the bat but Williamson is lauded more for his glovework. Statcast only had him as average in the field this year but he was credited with eight Defensive Runs Saved.

Michael Arroyo

Arroyo, 21, was an international signing out of Colombia and is now a consensus Top 100 prospect. In 2025, he got into 65 High-A games and 56 Double-A contests. Between those two levels, he slashed .262/.401/.433 for a wRC+ of 139. He has a bit of experience at third base and shortstop but was kept exclusively at second base in 2025. Since he hasn’t yet played at the Triple-A level, it’s probably a bit of a reach for him to crack the Opening Day roster, but he might have an outside chance. Even if Opening Day is out of the question, a midseason promotion would be a possibility.

Leo Rivas/Miles Mastrobuoni/Samad Taylor

These three are more in the part-time or utility bucket. Rivas can draw walks but has little power. He can play the three infield spots to the left of first base as well as the outfield corners. He could be on the bench but he also has an option remaining. Mastrobuoni’s minor league profile is somewhat similar but he hasn’t hit in the majors and is now out of options. Taylor has just 83 big league plate appearances and is also out of options. He has big wheels and can also play the outfield, so he could be a nice bench piece who comes in for pinch running and/or defensive substitute opportunities.

______________________

Put it all together and it puts the Mariners in an interesting position. They are clearly in win-now mode. They just finished their fifth straight winning season. They won the West for the first time in over 20 years. They came achingly close to a World Series berth. The Astros and Rangers seem to be dealing with payroll issues. The A’s have some promise but still need to build a pitching staff. The Angels have lots of questions to be answered. The division is there for the Mariners to take.

That should arguably tilt them towards going for established big leaguers such as Polanco or Suárez or whoever else. On the other hand, there’s a chance Emerson is a future star who is ready to go. If he struggles in the spring, Williamson at least gives them a glove-first floor as a fallback. At second base, the M’s could leave it open for Young, Bliss and Arroyo to duke it out. Between the three, they would only need one of them to step forward and seize the job.

In an ideal world, a utility player who can also move to the outfield would make a lot of sense, so perhaps the M’s will make a spirited pursuit of Brendan Donovan. He could play second or third if the younger guys don’t take those jobs. If they do, he could move into the corner infield mix with Victor Robles, Dominic Canzone and Luke Raley. If that also got too crowded, the designated hitter spot is fairly open at the moment. Free agents like Willi Castro or Amed Rosario would be less-exciting versions of the Donovan pick-up.

RosterResource has the club slated for a $151MM payroll in 2026. That’s about $15MM below the $166MM they had at the end of 2025. President of baseball operations Jerry Dipoto recently said that next year’s payroll would probably be in a similar range to the prior season. Like all teams, they could use some pitching upgrades, so it will be fascinating to see how much of their remaining resources they use on the infield.

Photo courtesy of Joe Nicholson, Imagn Images

Mariners Expected To Prioritize Josh Naylor In Free Agency

By | at

The Mariners’ season ended with heartbreak in Game 7 of the ALCS versus the Blue Jays, and they’ll now turn their focus to an offseason aimed at building upon what was clearly a World Series-caliber roster (even if they fell just short). They’ll be faced with several key free agent departures — Eugenio Suarez, Josh Naylor and Jorge Polanco chief among them. Per both Daniel Kramer of MLB.com and Adam Jude of the Seattle Times, Naylor is the team’s top priority among all of its potential free agents.

The 28-year-old Naylor (29 next June) was outstanding after being acquired in a deal sending young pitchers Ashton Izzi and Brandyn Garcia back to Arizona. Already in the midst of a nice season with the D-backs (.292/.360/.447), Naylor found another gear in the Emerald City, erupting for a .299/.341/.490 slash (137 wRC+) and astonishingly stealing nearly as many bases (19) in 54 games as he had in his entire career prior (25).

In many ways, Naylor embodies the approach the Mariners have sought in recent offseasons where improving the club’s contact skills has been a goal (one that’s largely eluded them). He punched out in only 13.7% of his plate appearances this year (16.2% with the Mariners) and carries just a 15.2% strikeout rate dating all the way back to 2020. He’s not a traditional slugging first baseman, but Naylor is typically good for around 20 homers per seasons — he hit nine in his 54 games with the M’s — and does have a 31-homer campaign on his résumé with the 2024 Guardians.

Heading into his age-29 season and coming off a career-best year with no qualifying offer attached — he’s ineligible to receive one after being traded midseason — Naylor will be a hot commodity in free agency. In president of baseball operations Jerry Dipoto’s nearly a decade running baseball operations in Seattle, he has only given out one multi-year deal to a free agent position player, that being Mitch Garver’s modest two-year, $24MM pact a couple offseasons ago. Clearly, that will need to change in order to retain Naylor.

That said, Dipoto told MLBTR’s Darragh McDonald on our podcast last month that the Mariners have definite interest in keeping Naylor long-term and believe the feeling is mutual. Dipoto noted that Naylor is “as good as anybody that’s played in the last handful of years at hitting [at T-Mobile Park]” — notoriously one of the most pitcher-friendly stadiums in the game. Naylor himself spoke about that to Jude’s colleague Ryan Divish last month, too, stating that as a visitor he “couldn’t wait” to come to T-Mobile Park and emphasizing how much he enjoys the stadium and the atmosphere created by the fan base. He used the word “awesome” multiple times in his more recent chat with Kramer and Jude about his experience in Seattle and the “ride-or-die” mentality of Seattle fans.

Even with mutual interest, the Mariners will have to extend well beyond their prior comfort levels in free agency to keep Naylor. At just 28 years old and coming off four straight seasons of well above-average offense, he should be in position to command a deal of at least four and possibly up to six years in length. In all likelihood, Seattle will need to more than triple and perhaps quadruple its investment to Garver in order to keep Naylor. Currently, the M’s have about $139MM on next year’s books (once Andres Munoz’s option is exercised), per RosterResource, though non-tenders and trades will surely impact that sum. They finished up the current season at about $166MM in payroll.

To be clear, the Mariners have signed players to lucrative long-term deals under Dipoto — just not specifically free agent position players. Left-hander Robbie Ray signed a five-year, $115MM deal in free agency following his Cy Young win back in 2021. The Mariners extended Luis Castillo on a five-year, $108MM deal after acquiring him from the Reds in a deadline swap. And of course, homegrown stars Cal Raleigh (six years, $105MM) and Julio Rodriguez (12 years, $210MM) signed nine-figure extensions to remain in Seattle for the long haul.

That the Mariners will prioritize Naylor over other free agents doesn’t necessarily make it a foregone conclusion that Polanco and Suarez will depart. Both Jude and Kramer suggest that with top prospect Colt Emerson and slick-fielding Ben Williamson in the mix at third base, re-signing Suarez on a weighty multi-year deal that covers his mid-30s is unlikely. However, both also note interest in retaining Polanco, who enjoyed a remarkable rebound campaign after re-signing on the heels of a 2024 season that was ruined by a knee injury.

Polanco underwent surgery last October and roared back into relevance this year with a .265/.326/.495 batting line (132 wRC+) and 26 homers during the regular season. He added three more postseason homers, including a pair of long balls against likely AL Cy Young winner (for the second consecutive season) Tarik Skubal.

The Mariners have a high-upside long-term option at second base in former first-round pick and top prospect Cole Young, but the 22-year-old Young hit just .211/.302/.305 in his first 77 MLB games this year. Even if Young is the long-term answer at second base — and some early struggles in fewer than 300 plate appearances hardly erodes the chances of that happening — Seattle could bring Polanco back as a primary designated hitter and part-time infielder. That’s the role he filled in 2025, tallying 88 games at DH, 38 at second base, five at third base and even one at first base.

As with Naylor, Polanco would require the Mariners to commit a multi-year deal, although not nearly on the same scale. Polanco will turn 33 early next July. A deal for him seems likely to be capped at three years, particularly when considering his recent injury troubles. He’d still require a more sizable commitment than the one made to Garver in free agency two years ago, but not by an especially large margin.

Mariners brass is set to talk with the media at an end-of-season press conference later this morning (1oam PT), and they’ll surely touch on this and a broad range of topics as they look ahead to the offseason, so there could be a fair bit of Mariners news emerging in the very near future.

Mariners Add Bryan Woo, Miles Mastrobuoni To ALCS Roster

By | at

The Mariners announced the 26 players who will be part of their American League Championship Series roster against the Blue Jays.  After using a complement of 14 pitchers and 12 position players against the Tigers in the ALDS, the M’s will use an even 13 pitchers and 13 position players to navigate their series with Toronto.  The full list…

Catchers: Harry Ford, Mitch Garver, Cal Raleigh
Infielders: J.P. Crawford, Josh Naylor, Jorge Polanco, Leo Rivas, Eugenio Suarez
Outfielders: Randy Arozarena, Dominic Canzone, Victor Robles, Julio Rodriguez
Utility player: Miles Mastrobuoni
Left-handed pitchers: Caleb Ferguson, Gabe Speier
Right-handed pitchers: Eduard Bazardo, Matt Brash, Luis Castillo, Logan Gilbert, Emerson Hancock, Luke Jackson, George Kirby, Bryce Miller, Andres Munoz, Carlos Vargas, Bryan Woo

The biggest story is Woo’s return, as the right-hander hasn’t pitched since suffering pectoral tightness in a start against the Astros on September 19.  Woo’s ramp-up work didn’t quite allow him to be ready for Seattle’s ALDS roster, but president of baseball operations Jerry Dipoto said on Friday after the Mariners’ Game 5 clinch that Woo would likely be part of the roster against Toronto.

Dipoto specified that Woo wouldn’t be available until closer to midway through the series, which would seemingly line him up for a start in Game 4.  Because Gilbert and Castillo were both needed in the 15-inning finale against Detroit, the Mariners’ rotation plans over the first two ALCS games in Toronto are very much up in the air.  Miller will start Game 1 on short rest and it can be assumed that Kirby will start Game 3 on regular rest, but it remains to be seen if Castillo and/or Gilbert will be involved in Game 2, and in what capacity.

Woo takes the roster spot of rookie infielder Ben Williamson, who didn’t see any action in the ALDS (and hasn’t played in a big league game since July 30).  Williamson’s inclusion on the ALDS roster was largely as a hedge against Josh Naylor potentially missing time on paternity leave, so the Mariners wouldn’t be left short-handed in terms of infield depth.  As it happened, Naylor played in all five games against Detroit and was still able to welcome his first child into the world.

Seattle’s other change comes on the bench, with one left-handed utilityman in Mastrobuoni replacing another in Luke Raley.  Mastrobuoni doesn’t have Raley’s offensive upside, but brings more to the table in pure versatility.  Raley can play first base and all three outfield positions, but Mastrobuoni saw work at both corner outfield slots and at first base in 2025, as well as time as a second and third baseman.  Essentially, Mastrobuoni’s inclusion allows the Mariners to replace Raley and Williamson in one fell swoop.  Raley came off the bench in four games of the ALDS, with one hit-by-pitch over six plate appearances.

Bryan Woo Left Off Mariners’ ALDS Roster

By | at

Right-hander Bryan Woo won’t be part of the Mariners’ AL Division Series roster, according to the Seattle Times’ Adam Jude.  “The club is optimistic Woo will be available in the ALCS if they do advance,” Jude writes, though Seattle’s path to the next round will be trickier without their most consistent pitcher from the 2025 season.

Woo’s postseason status has been a question mark since September 19, when the righty left a start after five innings due to pectoral tightness.  The M’s didn’t place Woo on the 15-day injured list, which was viewed as a sign that the injury wasn’t overly serious, and that the team was just being cautious in shutting Woo down in advance of what became an increasingly likely playoff berth in the final stretch of September.  The fact that the Mariners won the AL West and secured a first-round bye only added to the hope that Woo would be ready once the postseason got underway.

A Thursday bullpen session and a simulated inning marked the first time Woo had thrown off a mound since his injury.  Despite initial reports that the bullpen went well, it could be that Woo felt some discomfort the day after his throwing sessions, or perhaps he simply wasn’t close enough to 100 percent for the Mariners to pull the trigger on a roster spot.

More details should become available when manager Dan Wilson speaks with reporters later today, but the bottom line is that the Mariners’ rotation is missing a very important arm.  In a season when the usually excellent Seattle pitching staff was more solid than great, Woo took a step forward to lead the pitchers in fWAR (3.6), innings (186 2/3), and ERA (2.94).  Woo augmented those numbers with a 4.5% walk rate that ranked among baseball’s best, as well as a very strong 27.1% strikeout rate.

These numbers came on the heels of a very good 2024 season for Woo that was marred only by injuries, as a pair of IL stints limited him to 121 1/3 innings.  The full and healthy version of Woo made his first All-Star team in 2025 and established himself as another important frontline piece of the Mariners’ deep rotation, though this pec injury now threatens to bring a sour ending to this breakout campaign.

George Kirby will be the Mariners’ Game 1 starter today, and Luis Castillo will start Game 2.  The club hasn’t announced their Game 3 starter once the series shifts to Detroit for at least once game, though Logan Gilbert seems like the logical choice.  If a Game 4 is necessary, Bryce Miller will likely start, though it’ll probably be an all-hands-on-deck situation if the Mariners are facing elimination (or if they want to throw everything to try and eliminate the Tigers in four games, with an off-day to rest up the staff before a Game 5 in Seattle).

The Mariners’ full ALDS roster will be announced later today, but Jude reports that rookie catcher Harry Ford and rookie infielder Ben Williamson have made the cut.  Williamson’s presence gives Seattle some depth at third base if Eugenio Suarez has to move to first base.  Josh Naylor’s availability for the series beyond Game 1 is in question due to an impending paternity leave, as Naylor’s wife Chantel is on the verge of giving birth to the couple’s first child.

The Mariners Need To Shake Up Their Offense

By | at

Mariners fans entered the season with something of a sour outlook on the 2025 season. That's understandable, given an offseason in which the front office was clearly handcuffed by payroll limitations and a paper-thin trade market for big league hitters. Armed with a only a reported $15-16MM to patch over multiple needs in the infield, there wasn't a lot out there for president of baseball operations Jerry Dipoto and general manager Justin Hollander to realistically pursue.

Seattle wound up rolling the dice on a handful of cost-effective infield options. Jorge Polanco returned on a one-year deal with a conditional player option. Donovan Solano snagged a $3.5MM guarantee. Rowdy Tellez signed a minor league deal and made the team after a big spring showing (.298/.320/.574 in 50 plate appearances).

Frustration was understandable. The Mariners had made a big splash at the prior deadline, reeling in Randy Arozarena from the Rays, but fans hoping for a similarly bold strike in the offseason after another narrow playoff miss were left wanting.

That frustration likely faded for many as the Mariners raced out to a blistering start. On May 7, they sat with a 22-14 record, leading the American League West by a three-game margin and sporting a +31 run differential. One might imagine that the Mariners were again being carried by their brilliant rotation, but that wasn't the case -- at least not entirely. George Kirby has still yet to throw a pitch in 2025 as he recovers from some shoulder inflammation. Logan Gilbert hit the injured list on April 25 and remains there. Bryan Woo has been brilliant. Luis Castillo has been good. Gilbert was his typically excellent self prior to his flexor injury. But the Mariners' starting pitching, as a whole, has been a middle-of-the-pack unit.

Instead, Seattle's hot start was largely attributable to a surprisingly potent offense. Through that previously mentioned May 7 date, M's hitters were slashing .247/.340/.415, resulting in a 122 wRC+ that ranked third in the majors. They were fourth in home runs, seventh in runs scored, 12th in batting average, second in on-base percentage and ninth in slugging percentage.

In the week-plus since that time, the Mariners have lost five of six games and posted a collective .206/.259/.326 batting line (70 wRC+). Typically, there's little sense panicking over a week of poor results, but there was already reason to be a bit skeptical of Seattle's sudden offensive prowess. Good as Cal Raleigh is, he's not going to continue at a 50-homer pace. Polanco isn't going to keep his OPS north of 1.000. J.P. Crawford isn't sustaining a .410 OBP, nor will Leo Rivas keep hitting .341. Those timely early-season hot streaks buoyed the Seattle offense but can't all be sustained.

The Mariners seemingly recognize that some new blood is needed; they claimed Leody Taveras off waivers from the division-rival Rangers and took on about $3.7MM in salary to do so. That was an understandable move with both Victor Robles and Luke Raley on the injured list for the foreseeable future, but it shouldn't be the only one the Mariners consider.

Let's run through a few easy ways to bolster a lineup that is facing even more pressure than usual now that Bryce Miller has joined rotation-mates Kirby and Gilbert on the injured list...

Unlock Subscriber-Exclusive Articles Like This One With a Trade Rumors Front Office Subscription

BENEFITS
  • Access weekly subscriber-only articles by Tim Dierkes, Steve Adams, and Anthony Franco.
  • Join exclusive weekly live chats with Anthony.
  • Remove ads and support our writers.
  • Access GM-caliber tools like our MLB Contract Tracker

Mariners Select Ben Williamson

By | at

The Mariners announced that they have selected the contract of third baseman Ben Williamson.  In corresponding moves, outfielder Dominic Canzone was optioned to Triple-A Tacoma, and Ryan Bliss was moved to the 60-day injured list to create space on the 40-man roster.

Since multiple injuries up and down the roster have left the Mariners in need of infield reinforcements, the door was opened for Williamson to earn the first call-up of his three-year career as a professional.  Williamson only made his Triple-A debut this season and has hit a modest .281/.317/.333 in 60 plate appearances in Tacoma, but the M’s can’t afford to be too picky given their lack of depth at the big league level.

Williamson was a second-round pick for the Mariners in the 2023 draft, and he has a total career slash line of .281/.366/.389 over 645 PA, with four home runs and 22 steals (in 29 attempts).  MLB Pipeline ranks him 13th on their list of Seattle prospects and Baseball America has him 14th, with BA’s scouting report describing Williamson as “a pest at the plate” due to his high contact rates and on-base skills.  While Williamson makes a lot of contact, he has lacked in hard contact and in overall power, as evidenced by his uninspiring slugging percentages even at the minor league level.

This may not be the ideal profile for a Mariners team in sore need of consistent hitting, but Williamson does offer immediate defensive help at third base.  He is regarded as an excellent fielder who can also chip in at second or shortstop, but the hot corner seems like his natural spot since regular third baseman Jorge Polanco has been limited to DH duty.  Williamson is a right-handed hitter that could pair with the lefty-swinging Miles Mastrobuoni in a platoon situation until Polanco is healthy enough to return to the field.

Since the Mariners are reportedly scanning the trade market for other infielders, Williamson might just be in line for a cup of coffee in the majors if Seattle can land some more experienced help elsewhere.  Beyond Polanco’s ongoing knee and side discomfort, Luke Raley has now moved from first base to the outfield in the wake of Victor Robles’ shoulder fracture, and Bliss will miss the next 4-5 months after undergoing surgery to fix a torn left biceps.  It was just a matter of time before the Mariners moved Bliss from the 15-day IL to the 60-day IL in order to free up a 40-man roster spot.

Mariners Exploring Infield Market

By | at

Injuries have quickly changed the complexion of the Mariners’ infield. Second baseman Ryan Bliss will miss four to five months after suffering a tear in his left biceps and undergoing surgery. First baseman Luke Raley has shifted to the outfield in the wake of a fracture in Victor Robles’ shoulder, which will sideline him for around 12 weeks. Jorge Polanco is currently relegated to DH work and won’t play the infield for another week or two, per Adam Jude of the Seattle Times. He underwent knee surgery back in October and is dealing with some discomfort in his side as well.

With those early changes to the infield composition, the Mariners are poking around the market for potential external additions, Jude further reports. A major trade this time of year is rare but not unheard of. The Brewers just picked up young right-hander Quinn Priester in a trade with the Red Sox earlier this week, helping to shore up an injury-ravaged rotation in Milwaukee. Last year’s trade of Luis Arraez from Miami to San Diego occurred in early May. Of course, the Mariners spent the bulk of the offseason pursuing trades to bolster their infield and ultimately wound up making a series of small free agent signings instead — clearly not finding a match to their liking.

It’s unlikely that there are any teams that have strongly rethought their status as postseason hopefuls just a few weeks into the season. As such, it’s unlikely that there are any players available on the trade market at present whose teams weren’t willing to discuss them over the winter. If the Mariners couldn’t find an offseason trade of note to bolster their infield, it’s hard to envision them suddenly doing so now.

That said, Jude notes that Seattle’s front office is “combing” other rosters and looking at veteran players who are on minor league deals elsewhere. Many veterans will have opt-out dates and upward mobility clauses in April. Article XX(b) free agents (i.e. six-plus years of MLB service, finished the preceding season on a major league roster/injured list) who signed minor league contracts have a uniform opt-out opportunity on May 1. MLBTR took a look at 36 such players late in camp, though the majority this year happened to be pitchers.

This type of acquisition wouldn’t necessarily be a sexy one, but the Mariners have gotten no production to date out of Rowdy Tellez or Donovan Solano, and they’re hitting .200/.303/.333 as a team as of this writing. The bar for improvement is fairly low. Tellez and Solano will surely get some runway to turn things around, but it’s sensible to looking at other, similar veteran options who could potentially be had on the cheap. Among the veteran infielders on minor league deals and hitting well in Triple-A with other clubs are Christian Arroyo (Phillies), Scott Kingery (Angels), Harold Castro (Royals), Nick Gordon (Royals) and Jake Lamb (Giants).

Help could always come from the farm system as well. Jude writes that the organization is prioritizing top prospect Cole Young’s development at the moment and doesn’t want to rush him to the big leagues but could consider an accelerated path for third baseman Ben Williamson. Young is hitting .178/.302/.267 in Triple-A at the moment anyhow, making it tough to consider him an upgrade. Williamson is a plus defender at third base who’s gotten some reps in the middle infield, too. He’s light on power but has plus contact skills and is out to a .286/.314/.347 start in Tacoma. He batted .283/.375/.394 in 541 plate appearances between High-A and Double-A last year. First baseman Tyler Locklear didn’t hit in his big league debut last year but is slashing .286/.359/.457 through his first nine games in Triple-A this season.

If Seattle’s offensive doldrums continue much longer and there’s no help to be found outside the organization, it stands to reason that Williamson and/or Locklear could get early looks to help right the ship.

Show all

MLB Trade Rumors is not affiliated with Major League Baseball, MLB or MLB.com

Do not Sell or Share My Personal Information

hide arrows scroll to top