Michael Petersen

RP · R/R · age 32.3 · MIA

OCTOBER OK

Roster status
ACTIVE
Service thru 2025
0+086
Service now / projected
1+086 / 1+086
Option years left (2026)
1
Assignments left this season
5 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Purchased (ATL) Jul'25
Outrighted / DFA'd before
0 / 4
Contract
1 yr, $792.5k (2026)

Next 90 days, by the model

Stays put
99%
Designated
<1%
Optioned
<1%
Traded
1%
Released or non-tendered
<1%

Pushing the cut risk around: this season's WAR (1.17) lowers it, age (32.33) raises it, this season's innings (59.10) lowers it.

Context the model does not weigh: ZiPS projects -0.0 WAR, 1.2 WAR this season; 17 RP on the 40-man, of whom Peter Fairbanks is headed to free agency.

Trained on every 40-man roster snapshot since 2011 and what happened in the following 90 days; it sees roster status, options, service, history and last season's line, not this season's performance or the club's intentions. How well it does.

Is there a job for him next year?

MIA returns 16 RP on the 40-man once 1 free agent leaves; about 9 RP jobs survive a normal winter. By his own recent record he ranks 4th among the returners (1.3 WAR against a bar of 0.2), which the calibrated model turns into 99% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 9th (-0.0 WAR, bar -0.0), worth 96% kept on the same model.

By recent record: returning RPProj. WAR
1. Anthony Bender1.6
2. Ronny Henriquez1.3
3. Calvin Faucher1.3
4. Michael Petersen1.3
5. Dax Fulton0.5
6. Victor Vodnik0.5
7. Wilkelman Gonzalez0.5
8. Andrew Nardi0.3
9. Cade Gibsonlast job0.2
10. William Kempner0.2
11. Jack Ralston0.1
12. Josh Ekness-0.4
By ZiPS / Steamer: returning RPProj. WAR
1. Ronny Henriquez0.5
2. Andrew Nardi0.4
3. Dax Fulton0.3
4. Josh White0.3
5. Anthony Bender0.2
6. Victor Vodnik0.2
7. Calvin Faucher0.2
8. Cade Gibson0.0
9. Michael Petersenlast job-0.0
10. Tyler Zuber-0.1
11. Josh Ekness-0.1
12. Jack Ralston-0.1

Departing free agents are excluded; players on club, mutual or player options are counted as returning. The kept probability is calibrated on every September since 2012 using the recent-record projection; the ZiPS/Steamer reading uses the same model with a different ranking, so treat it as a second opinion rather than a calibrated number. Salary enters once arbitration projections publish in October.

October: Post-season eligible

On the 40-man before noon ET Sep 1. He stays eligible as long as he remains on the 40-man or 60-day IL through the post-season; an outright after the cutoff would end automatic eligibility.

The post-season eligibility list is fixed at noon ET on September 1: everyone on the 40-man, the 60-day IL or the military list at that moment, who then stays there without interruption. Attachment 25 (Major League Rule 40)

What happens if the club…

option him to the minors
Yes, 1 option year left. 5 of the five optional assignments for 2026 remain. He has 0 option days this season; at 20 a 2026 option year is used and those days stop counting as service. Once down he must stay 15 days unless he replaces an injured or traded player.
Option years and the 20-day rule · Five optional assignments per season · Minimum stay on option
designate him for assignment (or put him on outright waivers)
The club has 7 days to trade him, pass him through outright waivers, or release him; he is paid at the major-league rate and keeps accruing service in the meantime. On outright waivers any club can claim him for $50,000, worst record first, and the claiming club takes his contract (1 yr, $792.5k (2026)). If he clears, the club can outright him to the minors and he has no say; he stays under club control on a minor-league deal. He would then be Rule 5-eligible and would hold XX-D rights against any future outright. Post-season: an outright after the September 1 cutoff ends his automatic eligibility. He could only return as an approved injury replacement, and only if he accepts the outright and stays on a minor-league reserve list in the organization without interruption; a release makes him ineligible for anyone this October.
Designated for assignment: 7 days · Outright waivers · Article XX-D: the right to walk
release him
Release waivers cost a claiming club $1 but the claimant assumes the whole contract, so expensive players clear. The club owes the full unpaid balance of this season's salary, offset by whatever another club pays him this year. A released player is not post-season eligible for any club this year.
Release waivers and termination pay · Which rate a split contract pays at release
trade himBLOCKED
Not now: players on major-league contracts cannot be traded after the Aug 3 deadline until the day after the World Series.
Trade deadline · 10-and-5 rights · June 15 no-trade for free-agent signees
renew him for next year
Pre-arbitration: the club sets his 2027 salary near the minimum ($780,000 floor) and he has no leverage beyond a non-tender.
Minimum salaries · Tender deadline

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
2025145yesMar 17, 2025 to Mar 31, 2025 (13d, spring training)Apr 14, 2025 to Apr 21, 2025 (7d)Apr 22, 2025 to May 29, 2025 (37d)May 30, 2025 to Jun 26, 2025 (27d)Jun 28, 2025 to Jul 13, 2025 (15d)Jul 17, 2025 to Sep 1, 2025 (46d, within 24h of trade)
202455yesJul 4, 2024 to Jul 9, 2024 (5d)Jul 16, 2024 to Jul 19, 2024 (3d)Jul 19, 2024 to Sep 2, 2024 (45d)Sep 6, 2024 to Sep 8, 2024 (2d)

Transaction log

Sep 1, 2025RecalledMiami Marlins recalled RHP Michael Petersen from Jacksonville Jumbo Shrimp.
Jul 17, 2025OptionedMiami Marlins optioned RHP Michael Petersen to Jacksonville Jumbo Shrimp.
Jul 17, 2025TradedAtlanta Braves traded RHP Michael Petersen to Miami Marlins for cash.
Jul 13, 2025Designated for assignmentAtlanta Braves designated RHP Michael Petersen for assignment.
Jun 28, 2025OptionedAtlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers.
Jun 26, 2025RecalledAtlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers.
May 30, 2025OptionedAtlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers.
May 29, 2025RecalledAtlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers.
Apr 22, 2025OptionedAtlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers.
Apr 21, 2025RecalledAtlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers.
Apr 14, 2025OptionedAtlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers.
Apr 13, 2025RecalledAtlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers.
Apr 2, 2025TradedLos Angeles Angels traded RHP Michael Petersen to Atlanta Braves.
Mar 31, 2025Designated for assignmentLos Angeles Angels designated RHP Michael Petersen for assignment.
Mar 17, 2025OptionedLos Angeles Angels optioned RHP Michael Petersen to Salt Lake Bees.
Feb 11, 2025Status changeLos Angeles Angels activated RHP Michael Petersen.
Feb 11, 2025Claimed off waiversLos Angeles Angels claimed RHP Michael Petersen off waivers from Toronto Blue Jays.
Feb 4, 2025Designated for assignmentToronto Blue Jays designated RHP Michael Petersen for assignment.
Nov 5, 2024Claimed off waiversToronto Blue Jays claimed RHP Michael Petersen off waivers from Miami Marlins.
Sep 12, 2024Status changeMiami Marlins activated RHP Michael Petersen.
Sep 10, 2024Claimed off waiversMiami Marlins claimed RHP Michael Petersen off waivers from Los Angeles Dodgers.
Sep 8, 2024Designated for assignmentLos Angeles Dodgers designated RHP Michael Petersen for assignment.
Sep 6, 2024OptionedLos Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club.
Sep 2, 2024RecalledLos Angeles Dodgers recalled RHP Michael Petersen from Oklahoma City Baseball Club.
Jul 19, 2024OptionedLos Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club.
Jul 16, 2024OptionedLos Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club.
Jul 9, 2024RecalledLos Angeles Dodgers recalled RHP Michael Petersen from Oklahoma City Baseball Club.
Jul 4, 2024OptionedLos Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club.
Jun 16, 2024Contract selectedLos Angeles Dodgers selected the contract of RHP Michael Petersen from Oklahoma City Baseball Club.
Jan 24, 2024Signed as free agentLos Angeles Dodgers signed free agent RHP Michael Petersen to a minor league contract.
Nov 22, 2021Signed as free agentColorado Rockies signed free agent RHP Michael Petersen to a minor league contract.
Jul 17, 2015SignedMilwaukee Brewers signed RHP Michael Petersen.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 1). Rule 5 exposure deadline Nov 17, 2026.