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Michael Petersen
P
MIA
2026 season
- GP
- 65
- W-L
- 4-4
- ERA
- 3.02
- WHIP
- 1.13
- K
- 81
- IP
- 65.2
Game log
| Date | Opp | Result | Dec | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|---|
| Sep 27 | vs ATL | W 5-3 | W | 1.1 | 0 | 0 | 1 | 0 |
| Sep 23 | @CHC | W 3-2 | - | 0.2 | 1 | 0 | 0 | 2 |
| Sep 22 | @CHC | W 8-2 | - | 1.0 | 1 | 0 | 1 | 1 |
| Sep 19 | @SD | L 6-7 | - | 1.1 | 2 | 1 | 0 | 4 |
| Sep 15 | @AZ | W 4-2 | - | 1.0 | 0 | 0 | 1 | 2 |
| Sep 14 | @AZ | L 7-8 | - | 1.0 | 2 | 0 | 0 | 3 |
| Sep 12 | vs LAD | W 4-3 | - | 1.0 | 0 | 0 | 0 | 1 |
| Sep 9 | vs NYM | L 14-15 | - | 1.0 | 0 | 0 | 0 | 1 |
| Sep 2 | @KC | W 9-6 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 30 | @WSH | W 6-2 | - | 1.0 | 1 | 0 | 0 | 1 |
| Aug 29 | @WSH | L 4-5 | L | 0.2 | 1 | 0 | 2 | 1 |
| Aug 25 | vs BOS | L 3-7 | - | 1.0 | 1 | 0 | 1 | 0 |
| Aug 23 | vs WSH | W 6-2 | W | 0.1 | 0 | 0 | 1 | 1 |
| Aug 22 | vs WSH | W 4-2 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 18 | @PHI | L 4-6 | L | 1.0 | 4 | 4 | 0 | 0 |
| Aug 16 | @CIN | W 7-1 | - | 1.0 | 1 | 1 | 0 | 1 |
| Aug 15 | @CIN | W 8-4 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 11 | vs PIT | W 2-0 | - | 1.0 | 1 | 0 | 0 | 2 |
| Aug 9 | vs LAA | W 12-3 | W | 1.0 | 0 | 0 | 1 | 2 |
| Aug 7 | vs LAA | L 3-4 | - | 1.1 | 0 | 0 | 2 | 2 |
| Aug 2 | @NYM | W 2-0 | - | 1.0 | 0 | 0 | 1 | 2 |
| Jul 30 | @NYM | L 2-4 | L | 0.2 | 3 | 2 | 0 | 1 |
| Jul 26 | vs SD | L 3-5 | - | 0.1 | 0 | 0 | 0 | 0 |
| Jul 24 | vs SD | L 2-4 | - | 0.2 | 1 | 0 | 1 | 0 |
| Jul 19 | @MIL | L 1-3 | - | 1.1 | 0 | 0 | 0 | 1 |
| Jul 17 | @MIL | L 1-2 | - | 1.0 | 0 | 0 | 2 | 2 |
| Jul 12 | vs CLE | L 2-5 | - | 1.0 | 2 | 1 | 0 | 0 |
| Jul 8 | vs SEA | W 2-0 | - | 1.0 | 0 | 0 | 0 | 1 |
| Jul 7 | vs SEA | W 6-5 | - | 1.0 | 0 | 0 | 0 | 1 |
| Jul 5 | @ATH | W 9-8 | - | 1.0 | 0 | 0 | 0 | 1 |
| Jul 3 | @ATH | W 12-5 | - | 0.2 | 0 | 0 | 2 | 1 |
| Jun 29 | @COL | W 10-7 | - | 1.1 | 1 | 1 | 0 | 1 |
| Jun 26 | @STL | W 4-0 | - | 1.0 | 1 | 0 | 0 | 1 |
| Jun 24 | vs TEX | W 4-2 | - | 1.0 | 0 | 0 | 0 | 3 |
| Jun 22 | vs TEX | L 3-4 | - | 0.2 | 2 | 0 | 0 | 1 |
| Jun 21 | vs SF | W 2-1 | - | 1.0 | 0 | 0 | 0 | 0 |
| Jun 19 | vs SF | W 4-3 | - | 1.0 | 2 | 2 | 0 | 1 |
| Jun 17 | @PHI | W 12-4 | - | 1.0 | 0 | 0 | 0 | 3 |
| Jun 13 | @PIT | L 2-3 | - | 2.0 | 0 | 0 | 0 | 3 |
| Jun 11 | vs AZ | W 2-0 | - | 1.0 | 0 | 0 | 0 | 1 |
| Jun 9 | vs AZ | W 10-6 | - | 1.0 | 1 | 0 | 2 | 1 |
| Jun 7 | vs TB | W 4-1 | - | 1.0 | 0 | 0 | 0 | 2 |
| Jun 6 | vs TB | W 4-3 | - | 1.0 | 1 | 1 | 1 | 2 |
| Jun 2 | @WSH | W 7-3 | - | 1.0 | 1 | 0 | 0 | 2 |
| Jun 1 | @WSH | W 7-3 | - | 1.0 | 0 | 0 | 1 | 1 |
| May 29 | @NYM | L 7-9 | - | 1.0 | 0 | 0 | 0 | 1 |
| May 27 | @TOR | L 1-2 | - | 0.2 | 1 | 1 | 2 | 0 |
| May 24 | vs NYM | W 4-0 | - | 1.1 | 0 | 0 | 0 | 2 |
| May 22 | vs NYM | W 2-1 | - | 0.2 | 1 | 0 | 0 | 1 |
| May 19 | vs ATL | L 4-8 | - | 1.1 | 0 | 0 | 2 | 1 |
| May 15 | @TB | L 2-7 | - | 1.1 | 0 | 0 | 0 | 1 |
| May 9 | vs WSH | W 8-7 | - | 0.2 | 4 | 3 | 0 | 0 |
| May 7 | vs BAL | W 4-3 | - | 1.0 | 0 | 0 | 0 | 1 |
| May 5 | vs BAL | L 7-9 | - | 1.0 | 0 | 0 | 0 | 2 |
| Apr 28 | @LAD | W 2-1 | - | 0.1 | 3 | 1 | 0 | 0 |
| Apr 27 | @LAD | L 4-5 | - | 1.1 | 0 | 0 | 1 | 2 |
| Apr 22 | vs STL | W 4-1 | - | 1.0 | 0 | 0 | 0 | 3 |
| Apr 19 | vs MIL | W 5-3 | - | 1.2 | 1 | 1 | 0 | 1 |
| Apr 14 | @ATL | L 5-6 | - | 2.0 | 1 | 0 | 0 | 1 |
| Apr 11 | @DET | L 1-6 | - | 1.0 | 0 | 0 | 0 | 0 |
| Apr 8 | vs CIN | W 7-4 | S | 1.0 | 2 | 0 | 0 | 2 |
| Apr 4 | @NYY | L 7-9 | L | 1.0 | 1 | 2 | 3 | 0 |
| Apr 3 | @NYY | L 2-8 | - | 1.0 | 1 | 1 | 1 | 1 |
| Mar 30 | vs CWS | L 4-9 | - | 1.0 | 0 | 0 | 0 | 1 |
| Mar 29 | vs COL | W 4-3 | W | 1.0 | 0 | 0 | 0 | 2 |
| 2025 season | ||||||||
| Sep 27 | vs NYM | L 0-5 | - | 0.2 | 1 | 0 | 0 | 0 |
| Sep 23 | @PHI | W 6-5 | - | 1.2 | 1 | 1 | 1 | 1 |
| Sep 21 | @TEX | W 4-2 | - | 1.0 | 0 | 0 | 0 | 1 |
| Sep 19 | @TEX | W 6-4 | - | 1.0 | 1 | 1 | 0 | 0 |
| Sep 16 | @COL | W 6-5 | - | 0.2 | 4 | 3 | 1 | 1 |
| Sep 13 | vs DET | W 6-4 | - | 1.1 | 2 | 0 | 1 | 2 |
| Sep 11 | vs WSH | W 5-0 | - | 1.0 | 0 | 0 | 0 | 2 |
| Sep 7 | vs PHI | W 5-4 | - | 0.2 | 0 | 0 | 1 | 1 |
| Sep 5 | vs PHI | L 3-9 | - | 1.0 | 2 | 0 | 0 | 1 |
| Sep 3 | @WSH | L 5-10 | - | 1.0 | 0 | 0 | 0 | 2 |
| Sep 1 | @WSH | L 0-2 | - | 1.1 | 0 | 0 | 1 | 1 |
| Jun 27 | vs PHI | L 0-13 | - | 2.2 | 4 | 1 | 2 | 2 |
| Jun 26 | @NYM | L 0-4 | - | 1.0 | 0 | 0 | 0 | 1 |
| May 29 | @PHI | W 9-3 | - | 1.0 | 3 | 2 | 0 | 1 |
| Apr 13 | @TB | L 3-8 | - | 2.0 | 0 | 0 | 0 | 1 |
| 2024 season | ||||||||
| Sep 26 | @MIN | W 8-6 | - | 1.0 | 0 | 0 | 2 | 0 |
| Sep 25 | @MIN | L 3-8 | L | 1.0 | 2 | 1 | 0 | 0 |
| Sep 21 | vs ATL | L 2-6 | - | 2.0 | 1 | 0 | 0 | 2 |
| Sep 18 | vs LAD | L 4-8 | - | 0.2 | 3 | 2 | 1 | 1 |
| Sep 13 | @WSH | L 1-4 | - | 1.0 | 1 | 0 | 0 | 0 |
| Sep 4 | @LAA | L 1-10 | - | 1.0 | 4 | 3 | 1 | 1 |
| Sep 2 | @AZ | W 11-6 | - | 1.0 | 1 | 1 | 0 | 2 |
| Jul 14 | @DET | L 3-4 | - | 0.2 | 0 | 0 | 1 | 1 |
| Jul 12 | @DET | W 4-3 | W | 1.0 | 0 | 0 | 1 | 1 |
| Jul 9 | @PHI | L 1-10 | - | 0.2 | 2 | 1 | 0 | 0 |
| Jul 3 | vs AZ | L 4-12 | - | 2.0 | 4 | 4 | 1 | 1 |
| Jun 30 | @SF | L 4-10 | - | 2.0 | 1 | 0 | 0 | 0 |
| Jun 29 | @SF | W 14-7 | - | 0.2 | 0 | 0 | 1 | 2 |
| Jun 25 | @CWS | W 4-3 | W | 2.0 | 1 | 0 | 2 | 0 |
| Jun 22 | vs LAA | W 7-2 | - | 1.0 | 0 | 0 | 0 | 1 |
| Jun 18 | @COL | W 11-9 | W | 2.0 | 1 | 1 | 1 | 2 |
Latest news
Petersen could be part of a closing committee for the Marlins if Pete Fairbanks (hand) requires another IL stint, Christina De Nicola of MLB.com reports.
Fairbanks left Monday's game with a recurrence of a nerve issue in his pitching hand, a condition which first landed him on the IL in late April. Petersen, who leads Miami with 22 holds on the season, figures to be in the mix for closing opportunities in Fairbanks' absence, along with Calvin Faucher and Josh Ekness. "I think we'll just go into each day with -- on the pitching side -- what we have available and kind of what we can ask of them, and where we think it's the best place to go put guys," manager Clayton McCullough said after Monday's game. "[The] good thing is that a number of our guys have experienced pitching in a lot of different spots. So I think we'll just lean on that and go out there with the ones that we have available each day."
RotoWire via ESPN · Aug 25
Petersen (forearm) struck out two batters and allowed no hits and one walk over a scoreless inning of relief en route to claiming his 18th hold of the season in Sunday's 2-0 win over the Mets.
Petersen suffered an injury scare a week ago when he took a line drive off of his right forearm, but he escaped with little more than a bruise and was deemed ready to pitch after a few days of rest. The righty made his return to the mound in Thursday's series opener and was charged with two earned runs across two-thirds of an inning, but he was much sharper Sunday. His 18 holds lead the Marlins, and he lowered his ERA to 3.13 for the season after tossing the scoreless frame.
RotoWire via ESPN · Aug 3
Petersen is still dealing with soreness in his right forearm after being struck by a comebacker during his relief appearance in Sunday's 5-3 loss to the Padres, Jordan McPherson of the Miami Herald reports.
Petersen avoided any structural damage to his forearm but the resulting bruise is still presenting some discomfort for the right-hander. The Marlins are treating him as day-to-day and could look to stay away from him in the first game or two of their series with the Phillies this week.
RotoWire via ESPN · Jul 27
Petersen was lifted from his relief appearance during Sunday's game against the Padres due to a right forearm contusion, Christina De Nicola of MLB.com reports.
Petersen came on in relief of starter Janson Junk with two outs in the fourth inning and threw just two pitches before he was nailed by a grounder off the bat of Ty France. Marlins catcher Joe Mack gathered the loose ball and threw to first base to record the final out of the inning, but Petersen retreated to the locker room immediately after the play and wasn't available to return for the top of the fifth. Petersen has now made early exits from two of his last five relief appearances, as he was previously lifted from a July 12 contest against the Guardians due to a hamstring injury before getting a clean bill of health coming out of the All-Star break.
RotoWire via ESPN · Jul 26
Petersen was lifted midway through the fifth inning of Sunday's game against the Guardians due to a right hamstring injury, Christina De Nicola of MLB.com reports.
The Marlins treated their final game before the All-Star break as a bullpen day, with Tyler Phillips starting and covering the opening frame before Petersen became the third reliever summoned into the contest. After entering with two outs in the top of the fourth, Petersen induced a Travis Bazzana popout to close out the inning. Petersen stayed in the game to begin the fifth and allowed a leadoff home run to Brayan Rocchio, then recorded two outs before exiting the contest after surrendering a base hit to Kahlil Watson. The right-hander may have tweaked the hamstring at some point during the matchup with Watson, but it's not yet known if the injury is severe enough to keep the reliever out following the All-Star break.
RotoWire via ESPN · Jul 12
Petersen tossed a perfect eighth inning Sunday to record his 10th hold of the season in a win over the Giants. He didn't strike out a batter.
Tasked with handling the top of the San Francisco order, Petersen allowed some hard contact to Bryce Eldridge and Casey Schmitt, but the balls found Miami gloves. Petersen leads the Marlins in holds on the season, with five of his 10 coming in June as he's posted a 2.45 ERA, 0.82 WHIP and 16:4 K:BB over 11 innings on the month.
RotoWire via ESPN · Jun 22