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Mariners Promote Cole Young, Activate Bryce Miller

By Anthony Franco | May 31, 2025 at 1:10pm CDT

TODAY: The M’s officially announced Young’s selection and Miller’s reinstatement from the IL. Right-hander Casey Legumina and infielder Leo Rivas were optioned to Triple-A in corresponding 26-man roster moves, and righty Will Klein was designated for assignment to open up space for Young on the 40-man roster.

Klein made his MLB debut in 2024 and posted an 11.05 ERA over 7 1/3 combined innings with the Royals and Athletics.  Sent to the A’s as part of the deadline deal that brought Lucas Erceg to Kansas City, Klein was then flipped to Seattle in another trade this past January.

MAY 30: The Mariners will promote top infield prospect Cole Young this weekend, reports Daniel Kramer of MLB.com. He is not yet on the 40-man roster, so the team will need to make a move in that regard. They’ll also need to create active roster space for Young and starting pitcher Bryce Miller, who’ll be reinstated from the 15-day injured list to start tomorrow’s game against the Twins.

A Pittsburgh-area native, Young signed with Seattle out of high school in 2022. He received a $3.3MM bonus as the 21st overall pick. Scouting reports praised a potential plus hit tool and ability to play somewhere up the middle. While Young doesn’t have huge power projection in a 5’11” frame, he was viewed as a very polished player for his age.

That has been borne out in his systematic progression through the minors. He reached base at a .399 clip between two A-ball levels in his first full professional season. Young spent all of last season in Double-A, batting .271/.369/.390 as a 20-year-old in a tough league for hitters. The M’s bumped him to the more favorable Pacific Coast League this season. Young has taken to it well, running a .278/.391/.463 slash with more walks than strikeouts in his first look at Triple-A pitching.

The lefty-hitting Young actually began his Triple-A career mired in a slump. He hit .200 without a home run over 25 games in April. He’s been on an absolute tear since the calendar flipped. Young has raked at a .370/.466/.680 clip over 118 plate appearances in May. He has connected on five home runs, 10 doubles and three triples among a total of 37 hits. He has added another 15 walks while striking out all of eight times.

Young couldn’t have done more this month to force his way to the big leagues. He has divided his time evenly between shortstop and second base this season. Baseball America wrote over the offseason that he’s likely better suited for second base because of average arm strength. That figures to be his long-term home in Seattle. They’re committed to J.P. Crawford at shortstop. The path to playing time at the keystone is much more open. Ryan Bliss will miss most of the season recovering from biceps surgery. Miles Mastrobuoni and Dylan Moore have split the second base work over the past few weeks.

Moore is having a strong year, though his bat has tailed off following a huge April. He’s a right-handed hitter with a long track record of producing against lefty pitching. Moore figures to take some starts at second base against southpaws, but he’s versatile enough that it doesn’t need to be a strict platoon. Moore can spell Leody Taveras in right field or play regularly at third base over rookie Ben Williamson, who is hitting .246/.278/.297 through his first 38 games. Mastrobuoni, acquired in an offseason DFA trade with the Cubs, carries a .221/.306/.284 line through 111 plate appearances. He’ll be bumped to a utility role if not optioned to Triple-A.

Young was a consensus Top 100 prospect over the offseason. He meets the criteria for the Prospect Promotion Incentive. If he plays well enough to finish in the top two in Rookie of the Year balloting, he could earn a full year of service time. A’s shortstop Jacob Wilson seems as if he’ll run away with the award, but the runner-up spot is still there for the taking. That would not earn the Mariners any kind of draft compensation, which only applies if the team carries a top prospect in the big leagues for at least 172 days.

If he doesn’t earn the top-two Rookie of the Year finish, Young will fall short of a full service year and remain under club control for at least six seasons beyond this one. He’d be well-positioned to qualify for early arbitration as a Super Two player during the 2027-28 offseason if he’s in the big leagues for good.

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Newsstand Seattle Mariners Top Prospect Promotions Transactions Bryce Miller Casey Legumina Cole Young Leo Rivas Will Klein

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View Comments (56)
Post a Comment

56 Comments

  1. myaccount2

    1 day ago

    Badly needed. Hit .370 in May with a boatload of XBH. Give this floundering team a spark, please.

    6
    Reply
    • blackyjack

      19 hours ago

      I’m going to continue to say it, the bullpen has cost us more than the lineup. However, this is the right move as it has been a hole at that position.

      3
      Reply
      • myaccount2

        18 hours ago

        Yep, the bullpen has been atrocious. I like trying to fix 2B internally because if Young performs well enough to be a mainstay this season, it’s a lot easier and cheaper to trade for bullpen arms at the deadline than a starting-caliber 2B.

        1
        Reply
        • SodoMojo90

          15 hours ago

          I just hope they don’t trade someone in the top 10 for a rental bullpen arm. Like throwing away Clase last year for Garcia. Obviously hindsight is 20/20 after his injury, but still.

          2
          Reply
        • myaccount2

          15 hours ago

          My issue was less with the rental part and more with the quality of player–I didn’t see Yimi Garcia as a performance-altering addition. Either way, I agree that it was not the best handling of an asset, but I guess Jerry and co. thought he was a AAAA type and I kind of agree.

          Reply
    • Hammerin' Hank

      18 hours ago

      He should have already been up. These teams love to keep their talent down in the minors while the Miles Mastrobuonis of the world keep getting playing time.

      Reply
      • myaccount2

        15 hours ago

        Eh. Young had a lot to work on coming into this season. He needs to play every day and he wasn’t ready for that to start the season, so I don’t think this was service time manipulation or anything.

        I don’t really view Mastrouboni as competition to him since he’s not an everyday player and is a clearly defined role player. It would have been a waste to replace MM with Young and have Young sit 3 days a week.

        2
        Reply
  2. Desmond1992

    1 day ago

    I don’t think it’s going to make a difference, Mariners are done after tonight’s game, a very disheartening loss.

    2
    Reply
    • Dumpster Divin Theo

      1 day ago

      Wow what happened they were cruising at 6-2

      Reply
      • Desmond1992

        15 hours ago

        What happened is them being the Seattle Mariners, that’s all you need to know.

        Reply
    • myaccount2

      1 day ago

      There’s over 100 games left lol

      12
      Reply
      • Desmond1992

        15 hours ago

        Doesn’t matter to me, they’re not that good. They’ve been playing well above their actual talent level.

        Reply
        • myaccount2

          15 hours ago

          The offense has, maybe. The pitching has played well below their actual talent level. The M’s have won 90, 88, and 85 games the last 3 seasons. They’re not much of a different team and are on a similar pace, so I’m not sure why you believe this. Meanwhile, the Astros have lost talent from 2024 and have incurred a plethora of devastating injuries, the Rangers offense is poor, the Angels are the Angels, and the A’s aren’t quite there yet. No idea why you think the M’s can’t hang in, even if they don’t ultimately win the division.

          1
          Reply
    • Major League Baseball Fan

      1 day ago

      May 30.

      3
      Reply
    • batman2825

      22 hours ago

      Done by May 30th? Wow! That’s some world class cynicism. I feel sorry for you.

      10
      Reply
      • Desmond1992

        15 hours ago

        Have you been watching Mariners baseball the past 25 years like I have? I have every right to be negative after last night’s game.

        Reply
    • sillywabbit

      21 hours ago

      Eeore has spoken. The season has been decided.

      3
      Reply
    • ryrockak

      17 hours ago

      Pretty lame comment I hope you aren’t a Mariners fan

      1
      Reply
      • Desmond1992

        15 hours ago

        I am a Mariners fan, unfortunately. What reason do I have I have to think otherwise? They have been playing awful baseball since the sweep in San Diego sweep & they have been awful on these last 2 homestands. Pitching has been pretty bad & the offense is not that good, this team sucks.

        1
        Reply
  3. longoverdue1977

    1 day ago

    Finally, a Young player. Moore is having a good year, but his errors have been costly (like tonight’s game). Hope he can be a spark plug. Astros have caught up…..for now.

    3
    Reply
    • momTurphy

      1 day ago

      The season is Young. Moore errors than last year. Other guys seem Miles behind. It’s Ben a fun season and about to get Rowdy! Rivas gets LEft Out here.

      8
      Reply
      • Hammerin' Hank

        18 hours ago

        Dylan Moore at least contributes, but Mastrobuoni is indeed Miles behind.

        1
        Reply
  4. SodoMojo90

    1 day ago

    Hopefully, this is the start of a long, great career. Who is the odd man out here? It’s gotta be Solano. Expecting another Casey Lawrence DFA as well since Bryce is back. Maybe Legumina since he’s been shelled this week.

    1
    Reply
    • sad tormented neglected mariners fan

      1 day ago

      We paid too much for Solano, it’s probably going to be Williamson optioned or mastrobuoni out

      2
      Reply
      • SodoMojo90

        1 day ago

        I don’t think they’re gonna be too worried about biting the bullet on a 3.5 million one year contract on a player who is just an empty spot in the lineup at this point. They have to pay it either way, so why not just release him instead of giving him at bats which becomes a strikeout or a groundout.

        7
        Reply
      • EdgarsCantina

        1 day ago

        Little Leo Rivas probably sent down

        4
        Reply
        • SodoMojo90

          1 day ago

          Didn’t think of him. Yeah he’s more likely to be sent down over Miles or Moore. I still think it’s only a matter of time before Solano goes. He’s literally an empty spot in the lineup.

          Reply
        • batman2825

          21 hours ago

          He’s hitting well the past 2 weeks.

          Reply
      • FecklessInSeattle

        1 day ago

        I feel like you’ve also seen this movie before 🤔
        God I would love for this to be a 1:1 Solano swap, but agree Mastro option more likely and then assume its Solano when Raley is back—which, thankfully, should be coming shortly too🤞
        Then again, ballsiest thing they’ve done in a long time was release Haniger, so there’s at least a chance…

        Reply
      • slund24

        19 hours ago

        Lawerence DFA and Rivas sent down. Williamson is the 3B and no way sent down. Rivas, Mastrobuoni, and Moore are all utility guys and Rivas has options as well as has the least positional flexibility so hes the obvious guy to be sent down.

        Reply
    • momTurphy

      1 day ago

      Lawrence DFA makes room on the 26 for Miller and on the 40 for Young. Rivas down to make room on the 26 for Young. Rivas has options and is mostly a second baseman. Mastrobuonis glove and versatility is his staying power.

      Reply
    • batman2825

      22 hours ago

      Will Klein has to be a DFA candidate. He’s been terrible all year in Tacoma.

      1
      Reply
    • blackyjack

      19 hours ago

      If it was me, it would be to DFA Mastrobuoni which handles both the 25 and 40 man roster spots needed.

      1
      Reply
    • Hammerin' Hank

      18 hours ago

      At least Solano has proven to be a decent hitter in the past. Miles needs to be jettisoned to the minors for good.

      Reply
  5. sad tormented neglected mariners fan

    1 day ago

    We can really use another left handed bat, especially at 2nd or 3rd base because we do not have a lot of depth there at the major league level

    I’ve been waiting for this guy for 3 years

    4
    Reply
    • AlienBob

      10 hours ago

      None of our infielders hit for power other the Rowdy. We need to draft Aiva Arquette.. His size, power and position versatility would help the offense a lot.

      Reply
      • Bookbook

        5 hours ago

        In 2028.

        Reply
  6. twozero6ix

    1 day ago

    Lessggoooo

    1
    Reply
  7. The Big Yo

    1 day ago

    Cole is indeed young

    1
    Reply
  8. cc22

    24 hours ago

    Congrats Cole Young. Another 2022 1st round draft class. Let’s go!!!

    2
    Reply
  9. Stevil

    22 hours ago

    I don’t have time to read through the other comments right now, but Mastrobuoni might be the odd man out. He’s a LHH (like Young), struggled this month, and assuming Young plays regularly or semi-regularly at 2B, they could use Moore in any of the corners.

    This would allow them to keep Solano who has been better of late, but let’s see.

    Now, about the pitching…

    4
    Reply
    • slund24

      19 hours ago

      Rivas has options, it will be him. He’s barely playing and has basically only been playing 2B. Mastrobuoni has been playing 3B and OF as well as 2B so gives them the ability to PH for Ben late in games so he stays on team for now.

      1
      Reply
      • Stevil

        17 hours ago

        Yeah, but Rivas can play short, which allows them more flexibility with Moore who also plays the OF and third. Nothing is definitive.

        It doesn’t really matter, though. A bench/role player goes away in favor of a player who may be the future at second.

        Reply
        • Stevil

          16 hours ago

          And it is indeed Rivas.Mastrobuoni stays for now,

          Hopefully Raley isn’t too far from his return.

          Reply
    • Hammerin' Hank

      18 hours ago

      He’s struggled his whole career.

      Reply
  10. chandlerbing

    19 hours ago

    Only 21, doubt he’ll excel immediately
    But great young talent. This time next yr gonna be full time 2nd b for the m’s
    10-15 hrs, 20sb, .290-300 avg
    M’s have amazing prospects like
    Lazaro , felnin , emerson , juranjelo
    Good luck seattle dont f it up

    2
    Reply
    • Hammerin' Hank

      18 hours ago

      Don’t f it up like Baltimore.

      Reply
      • SodoMojo90

        16 hours ago

        Too much pitching in the majors and the pipeline to end up like that mess.

        Reply
  11. DarrenDreifortsContract

    19 hours ago

    Him and Cal will be the next Griffey and A-Roid.

    Reply
  12. Reynaldo's

    17 hours ago

    Casey Lasagna has been particularly ineffective. How does Solano still have a job?

    Reply
  13. ClevelandSteelEngines

    16 hours ago

    Mariners have been trying to fix 2B for how many years now? Makes you wonder if the front office is holding everyone in suspense just for 2B. Not sure if Cole Young will be the answer, but it is certainly the new hope being proffered. One good month in AAA Tacoma is worth diddly.

    Reply
  14. Zippy the Pinhead

    16 hours ago

    A good step. Still waiting for the M’s to cut bait on the sunk cost of Solano and bring Locklear back. Donnie Barrels is cooked as a hitter and a defensive liability anywhere you put him, which is barely a 1B (regardless of his past).

    Reply
  15. BPax

    15 hours ago

    I don’t follow other team’s prospects much, but as an M’s fan I can say we’ve had more than our share of duds. Let’s hope Young is the real deal. I still get a nervous tick when recalling conversations with my fellow M’s fans….”If Smoak and Ackley can hit and Zunino quits chasing the low and outside pitch for strike three and if Michael Saunders and Nick Franklin are for real and if Paxton, Hultzen, and Walker get here, we might be pretty good! After typing that I need a drink.

    Reply
    • good vibes only

      6 hours ago

      Depends what your definition of the ‘real deal’ is but he’s not a high ceiling prospect. His peak is probably a batting line like JP’s this year in the .750 OPS or 120 WRC+ range. Solid everyday regular on a good team if it works. The lack of power is the big limiting factor and he’ll probably hit at the bottom half of the lineup as long as JP is around.

      Still, the back of our lineup is terrible so I do think there’s a good chance he improves the team.

      Reply
  16. SodoMojo90

    13 hours ago

    Don’t remind us of Danny Hultzen. Please

    1
    Reply
  17. good vibes only

    6 hours ago

    Good move. Now cut Garver and call up Ford.

    1
    Reply

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