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Red Sox Designate Sean Newcomb For Assignment

By Nick Deeds | May 24, 2025 at 5:17pm CDT

The Red Sox announced this afternoon that they’ve designated left-hander Sean Newcomb for assignment. The move makes room on the active roster for right-hander Luis Guerrero to be recalled from Triple-A.

Newcomb, 32 next month, is a former first-round pick who was selected 15th overall by the Angels back in 2014. He was swapped to Atlanta in the Andrelton Simmons trade prior to his MLB debut and spent parts of six seasons with the Braves from 2017 to 2022. During that time, he pitched to a league average 4.25 ERA in 144 appearances (57 starts) with a near-matching 4.27 FIP. That overall number doesn’t tell the full story, however, as Newcomb was actually an above-average pitched (110 ERA+) over his first three years in the majors. Things took a turn for the worse after that, however, and by the end of the 2022 season he had been cut by the Braves and had a 7.45 ERA with a 5.57 FIP over his 73 2/3 innings of work in the majors from 2020 to 2022. He spent the following two seasons in Oakland with a roughly average 4.32 ERA despite shoddy peripherals that were more or less in line with his numbers during his previous struggles.

Newcomb’s future was filled with uncertainty entering Spring Training this winter. He has signed a minor league deal with the Red Sox over the winter, but the club had a loaded pitching staff and Newcomb hadn’t exactly shown much at the big league level in recent years. Fortunately for the soon to be 32-year-old, the Red Sox suffered a number of injuries throughout the spring. That, in conjunction with an impressive Spring Training, was enough to get Newcomb an opportunity to break camp not just with Boston, but as a member of the starting rotation while players like Lucas Giolito, Kutter Crawford, and Brayan Bello began the season on the IL.

Newcomb’s five starts with Boston over the season’s first month were something of a mixed bag. The southpaw completed the fifth inning just once in those outings and surrendered a 4.43 ERA overall, but his peripherals looked quite strong as he struck out 25.7% of his opponents while walking 10.5%. He got bumped from the club’s rotation as other pitchers started to get healthy, but remained on the roster as a long relief option and excelled in that role as well, with a 3.06 ERA and 3.81 FIP in 17 2/3 innings of work across six relief outings.

In all, the lefty finishes his time with the Red Sox with a 3.83 ERA and 3.28 FIP across 40 innings of work. It’s a solid track record, and it would hardly be a surprise to see a pitching-needy club scoop the southpaw up either via trade or the waiver wire in the coming days given his previous pedigree and more recent success in the majors this year. The Red Sox will have one week to either trade Newcomb or attempt to pass him through waivers. Should he clear waivers, they could attempt to outright him to the minors as non-roster depth but he would have the opportunity to reject that assignment.

As for Guerrero, the right-hander has yet to give up an earned run in 14 innings of work at the major league level across the past two seasons. He’s rode the shuttle between Triple-A and the majors frequently for the Red Sox in recent years due to the fact that he has options remaining, but has yet to get an extended audition at the big league level. It’s possible his opportunity is now, although it must be noted that the Red Sox have a number of hurlers on the injured list whose activation will eventually require someone to be sent down to the minors or otherwise removed from the roster.

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Boston Red Sox Transactions Luis Guerrero Sean Newcomb

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30 Comments

  1. MeowMeow

    4 hours ago

    Thank you for your service, Mr. Newcomb. So many relief innings lately.

    5
    Reply
    • Gwynning

      4 hours ago

      Ouch, inbetween a DoubleHeader? He did look particularly bad in Game 1 though. Nice green jerseys Boston!

      3
      Reply
    • Cora the Destroya

      4 hours ago

      I was thinking exactly the same thing. Even if i didn’t think he was great, he pitched in where needed (pun intended)

      1
      Reply
  2. FireCora420

    4 hours ago

    Never heard of this guy but he sounds like a classic pickup for Dumpster Diving Craig and Scavenger Cora

    1
    Reply
    • Poolhalljunkies

      4 hours ago

      Umm then you dont pay enough attention to the team he was drafted by the red sox in 2021 and has slowly worked his way up..believe bloom dtafted him…so not sure how this is “classic” craig…do some research next time

      3
      Reply
      • bhambrave

        4 hours ago

        Drafted by the Angels and traded to the Braves. Unless you’re talking about Guerrero.

        1
        Reply
        • Poolhalljunkies

          3 hours ago

          I was referring to Guerrero since he is the new addition logically

          1
          Reply
        • bhambrave

          3 hours ago

          @Poolhall: You replied to someone talking about Newcomb, and criticized them unfairly. You need to work on your reading comprehension.

          2
          Reply
        • Poolhalljunkies

          3 hours ago

          How do you figure? Based on the comment “Never heard of this guy but he sounds like a classic pickup for Dumpster Diving Craig and Scavenger Cora” ..to me that is complaining about a new addition…ie Guererro.not someone who has been around since spring traning grew up not far from boston and is now no longer on the team…like how do you follow the sox in 2025 and this is the first you hear of newcomb?

          2
          Reply
      • GhostofThomasHamilton

        4 hours ago

        Umm, apparently you don’t pay attention to the team.

        He was drafted by the Angels. He was a first round pick, and came up with the Braves in 2017..
        He signed a Minor League contract with the Red Sox in January.

        Do some research next time.

        Reply
        • Poolhalljunkies

          4 hours ago

          Luis Guerroro was drafted by the red sox in The 17th round in 2021..why would anyone be talking about newcomb as never heard of he was dfa lol .you do some research nobody cares about newcomb since he was dfa

          1
          Reply
      • FireCora420

        4 hours ago

        Baseball reference says he was drafted by Angels in 2014… guess I’m not the only idiot here, poolhall

        2
        Reply
        • Poolhalljunkies

          4 hours ago

          Luis Guerroro was drafted by the red sox in The 17th round in 2021..why would anyone be talking about newcomb as never heard of he was dfa lol …but fine i will play how in the world had you never heard of newcomb and watched the red sox in 2025?..you are the idiot if you are complaing about newcomb being trash where were you 3 months ago when signed him

          1
          Reply
        • FireCora420

          3 hours ago

          Newcomb is the only one that could be picked up in this scenario… why would I be talking about picking up a guy who is currently rostered… to be fair you have to have a high IQ to understand my posts

          2
          Reply
        • Poolhalljunkies

          3 hours ago

          Dude he was not picked he was dropped ..
          seriously ? Maybe you dont understand what designated for assignment means?.and how have you watched the sox in 2025 and you never heard of newcomb?..now i see..Guessing you are just a troll..nobody is that dense lol good show you got me

          1
          Reply
        • FireCora420

          2 hours ago

          He was DFA’d which means he could be picked up by a Dumpster Diving GM like Cheap Craig whereas Luis Guerrero cannot

          You are nitpicking and biased, I win. Bye bye

          Reply
      • Cora the Destroya

        4 hours ago

        You wanna shout at each other, but one of you is talking about Guerrero and one is talking about Newcomb. Get the stories straight.

        Opening poster is ambiguous

        6
        Reply
        • Poolhalljunkies

          3 hours ago

          Tbh i assumed he was referring to Guerrero and kind of dont understand people trashing all of breslows moves i get people make mistakes and he has but hes also made a bunch of great ones and deserves credit for them

          2
          Reply
        • Cora the Destroya

          2 hours ago

          I think he deserves more credit than he gets as well. The Sale trade didn’t work out but was logical. I dont get Lucas Sims but the others are decent

          1
          Reply
        • Cora the Destroya

          57 mins ago

          The worst move Breslow made wasn’t moving Sale, it was keeping this doofus Cora. Loved Cora in his prime but we are past that now

          Reply
  3. DonOsbourne

    4 hours ago

    He looked like he was throwing the ball pretty well the couple of times I saw him pitch. I was surprised the Red Sox started the year with him in their rotation. I thought he was done a couple years ago. But held his own. I hope he can stay healthy enough to build on his start to the season.

    Reply
  4. Mercenary.Freddie.Freeman

    4 hours ago

    He will be picked up by a team. Lefty’s pitch in MLB forever even if they are not very good.

    3
    Reply
  5. mlb1225

    4 hours ago

    Honestly doesn’t look like he was doing all that bad. Sub-4.00 ERA and FIP while having a BABIP of .421, which is guarenteed to go down? Is there something I’m missing here, Red Sox fans?

    Reply
    • HBan22

      4 hours ago

      Look at his WHIP. Quite bad.

      3
      Reply
      • mlb1225

        4 hours ago

        Yeah, but that’s because of his BABIP being so high. Only one player in baseball history has maintained that high of a BABIP in at least 50 IP, and that was back in 1936. His walk rate and strikeout rate are okay.

        Reply
    • Gwynning

      4 hours ago

      The way he looked today, I’ll take the over on the .421 figure going up.

      1
      Reply
    • Joemo

      4 hours ago

      He wasn’t doing too bad.

      He’s the long relief option.

      I wonder if there’s a roster crunch coming with the SP and they want to keep someone like dobbins/Fitts in long relief.

      So like if Houck/Fitts are getting ready to come for the IL, they need to get creative.

      Reply
    • MeowMeow

      3 hours ago

      I think it’s more a consequence of them needing to shuffle around some arms, given how the bullpen has been taxed lately. Newcomb has always been a bit of a 26th man since some of the injured starters got back, and he’s been used a LOT for a reliever the last couple weeks. His numbers so far this season have been pretty good, but he’s wildly outperforming his career averages in K/9 and BB/9. Apparently the Red Sox don’t believe that to be a sustainable improvement.

      3
      Reply
  6. Jarred Kelenic's Beer Can

    1 hour ago

    Seems like a future Mariner. They need someone effective at eating innings.

    Reply
  7. Rsox

    1 hour ago

    Hopefully they can sneak him through waivers and maybe convince him to go to Worcester. The Sox bullpen is gassed, the starters can’t seem to more than 5 (or even 5 at all for that matter). Giolito goes 7 scoreless but having to leave Guerrero in because everyone else was unavailable cost them the game tonight

    Reply

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