Michael Petersen
RP · R/R · age 32.3 · MIAOCTOBER OK
ACTIVE
0+086
1+086 / 1+086
1
5 of 5
PRE-ARBITRATION / AUTO-RENEWAL
Purchased (ATL) Jul'25
0 / 4
1 yr, $792.5k (2026)
Next 90 days, by the model
99%
<1%
<1%
1%
<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 RP | Proj. WAR |
|---|---|
| 1. Anthony Bender | 1.6 |
| 2. Ronny Henriquez | 1.3 |
| 3. Calvin Faucher | 1.3 |
| 4. Michael Petersen | 1.3 |
| 5. Dax Fulton | 0.5 |
| 6. Victor Vodnik | 0.5 |
| 7. Wilkelman Gonzalez | 0.5 |
| 8. Andrew Nardi | 0.3 |
| 9. Cade Gibsonlast job | 0.2 |
| 10. William Kempner | 0.2 |
| 11. Jack Ralston | 0.1 |
| 12. Josh Ekness | -0.4 |
| By ZiPS / Steamer: returning RP | Proj. WAR |
|---|---|
| 1. Ronny Henriquez | 0.5 |
| 2. Andrew Nardi | 0.4 |
| 3. Dax Fulton | 0.3 |
| 4. Josh White | 0.3 |
| 5. Anthony Bender | 0.2 |
| 6. Victor Vodnik | 0.2 |
| 7. Calvin Faucher | 0.2 |
| 8. Cade Gibson | 0.0 |
| 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 and the 20-day rule1 option year left entering 2026.A season with fewer than 20 days on optional assignment does not count as an option year, and those days count as Major League service. 2022-2026 Basic Agreement, Article XIX(E) and XXI(B), p. 98 (the number itself is in Major League Rule 7(c))
- Five optional assignments per seasonOptioned 0 times this season that count toward the cap of 5: 5 left.A player can be optioned at most five times in a season; a sixth trip requires outright waivers. 2022-2026 Basic Agreement, Article XIX(E), p. 98 (the number itself is in Major League Rule 7(c))
- Post-season roster eligibilityOn 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. 2022-2026 Basic Agreement, Attachment 25, p. 253 (the number itself is in Major League Rule 40)
- Rule 5 clockOn a 40-man roster (would first be exposed after 2018 otherwise).
Option years, season by season
| Season | Days on option | Option year used | Stints |
|---|---|---|---|
| 2025 | 145 | yes | Mar 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) |
| 2024 | 55 | yes | Jul 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, 2025 | Recalled | Miami Marlins recalled RHP Michael Petersen from Jacksonville Jumbo Shrimp. |
| Jul 17, 2025 | Optioned | Miami Marlins optioned RHP Michael Petersen to Jacksonville Jumbo Shrimp. |
| Jul 17, 2025 | Traded | Atlanta Braves traded RHP Michael Petersen to Miami Marlins for cash. |
| Jul 13, 2025 | Designated for assignment | Atlanta Braves designated RHP Michael Petersen for assignment. |
| Jun 28, 2025 | Optioned | Atlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers. |
| Jun 26, 2025 | Recalled | Atlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers. |
| May 30, 2025 | Optioned | Atlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers. |
| May 29, 2025 | Recalled | Atlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers. |
| Apr 22, 2025 | Optioned | Atlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers. |
| Apr 21, 2025 | Recalled | Atlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers. |
| Apr 14, 2025 | Optioned | Atlanta Braves optioned RHP Michael Petersen to Gwinnett Stripers. |
| Apr 13, 2025 | Recalled | Atlanta Braves recalled RHP Michael Petersen from Gwinnett Stripers. |
| Apr 2, 2025 | Traded | Los Angeles Angels traded RHP Michael Petersen to Atlanta Braves. |
| Mar 31, 2025 | Designated for assignment | Los Angeles Angels designated RHP Michael Petersen for assignment. |
| Mar 17, 2025 | Optioned | Los Angeles Angels optioned RHP Michael Petersen to Salt Lake Bees. |
| Feb 11, 2025 | Status change | Los Angeles Angels activated RHP Michael Petersen. |
| Feb 11, 2025 | Claimed off waivers | Los Angeles Angels claimed RHP Michael Petersen off waivers from Toronto Blue Jays. |
| Feb 4, 2025 | Designated for assignment | Toronto Blue Jays designated RHP Michael Petersen for assignment. |
| Nov 5, 2024 | Claimed off waivers | Toronto Blue Jays claimed RHP Michael Petersen off waivers from Miami Marlins. |
| Sep 12, 2024 | Status change | Miami Marlins activated RHP Michael Petersen. |
| Sep 10, 2024 | Claimed off waivers | Miami Marlins claimed RHP Michael Petersen off waivers from Los Angeles Dodgers. |
| Sep 8, 2024 | Designated for assignment | Los Angeles Dodgers designated RHP Michael Petersen for assignment. |
| Sep 6, 2024 | Optioned | Los Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club. |
| Sep 2, 2024 | Recalled | Los Angeles Dodgers recalled RHP Michael Petersen from Oklahoma City Baseball Club. |
| Jul 19, 2024 | Optioned | Los Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club. |
| Jul 16, 2024 | Optioned | Los Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club. |
| Jul 9, 2024 | Recalled | Los Angeles Dodgers recalled RHP Michael Petersen from Oklahoma City Baseball Club. |
| Jul 4, 2024 | Optioned | Los Angeles Dodgers optioned RHP Michael Petersen to Oklahoma City Baseball Club. |
| Jun 16, 2024 | Contract selected | Los Angeles Dodgers selected the contract of RHP Michael Petersen from Oklahoma City Baseball Club. |
| Jan 24, 2024 | Signed as free agent | Los Angeles Dodgers signed free agent RHP Michael Petersen to a minor league contract. |
| Nov 22, 2021 | Signed as free agent | Colorado Rockies signed free agent RHP Michael Petersen to a minor league contract. |
| Jul 17, 2015 | Signed | Milwaukee 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.