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Marlins Acquire Michael Petersen From Braves

By Anthony Franco | July 16, 2025 at 8:59pm CDT

The Marlins announced that they’ve acquired reliever Michael Petersen from the Braves for cash considerations and optioned him to Triple-A Jacksonville. Miami transferred righty reliever Jesus Tinoco to the 60-day injured list to create a 40-man roster spot. According to the MLB.com transaction log, the Fish also outrighted veteran catcher Rob Brantly to Triple-A after he cleared waivers. Brantly was quietly designated for assignment earlier this week.

Atlanta had designated Petersen for assignment last week. The 31-year-old righty pitched four times for the Braves. He tossed 6 2/3 innings of three-run ball, striking out five with a pair of walks. Petersen has spent more of the season with their top affiliate in Gwinnett. He has turned in a 3.13 ERA with a solid 25.7% strikeout rate and a 7% walk percentage in the minors. It’s his second straight impressive Triple-A season. He fired 33 innings of 1.64 ERA ball while punching out more than a third of opponents there last year.

This will be Petersen’s second stint with Miami. The Fish grabbed him off waivers from the Dodgers last September. Petersen pitched five times, giving up four runs (three earned) through 5 2/3 frames. He was in the major league bullpen for the final two and a half weeks of the season. They lost him on waivers to the Blue Jays at the beginning of the offseason. Petersen subsequently made his way to the Angels and Braves in minor transactions before heading back to Miami.

Petersen stands at 6’7″ and averages 97 MPH with his fastball. He uses the heater and a low-90s cutter as his two offerings. While he hasn’t missed many bats in his scattered MLB action, he has shown notable strikeout upside in Triple-A. He’s in his second of three option years and has less than one year of MLB service.

Tinoco has been out since June 3 due to a forearm strain. He has yet to begin a minor league rehab assignment, though he has been throwing for the past couple weeks (via the MLB.com injury tracker). This is a procedural transfer that officially rules him out until the first week of August. Tinoco is multiple weeks away from a return anyways, as he’ll need to progress through bullpen and batting practice sessions before he goes on a rehab stint.

MLB.com’s Christina De Nicola first reported that the Marlins were acquiring Petersen for cash and optioning him.

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Atlanta Braves Miami Marlins Transactions Jesus Tinoco Michael Petersen Rob Brantly

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View Comments (10)
Post a Comment

10 Comments

  1. Idosteroids

    4 hours ago

    Sell off has begun

    Reply
    • cartography ponderance

      4 hours ago

      Now that they’ve traded Peterson it’s gotta be Acuna, Olson, and Murphy going next. They’re clearly trading all their best pieces.

      8
      Reply
      • Brave New Guy

        10 mins ago

        Acuna isn’t going anywhere. Olsen either. I could easily see Murphy getting dealt however.

        Reply
        • TheOtherMikeD

          59 seconds ago

          THE JOKE
          YOUR HEAD

          Reply
  2. bigb5591

    4 hours ago

    They can sell all the Michael Petersens they want.

    2
    Reply
  3. alfredog-2

    4 hours ago

    tinoco to 60day IL

    Reply
  4. Bart Harley Jarvis

    3 hours ago

    Michael Petersen, the pride of St. Francis High School, Mountain View, CA!

    1
    Reply
    • cartography ponderance

      1 hour ago

      All the things I want to say to Harley Jarvis, are things that would get me banned here. But you know exactly how I feel.

      Reply
  5. Old York

    2 hours ago

    Marlins going all in this year! All 5 Marlins fans are excited.

    Reply
  6. TheOtherMikeD

    6 seconds ago

    I’m constantly told division rivals won’t trade with each other.

    Reply

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