2026 Stats
W-L
1-0
ERA
0.00
WHIP
0.00
K
2
SV
0
Rest-of-Season Projections
Signed a one-year contract with the Angels in March of 2025. Traded to Atlanta in April of 2025. Traded to the Marlins in July of 2025.
Will begin season in majors
Petersen has claimed a spot in the Marlins' Opening Day bullpen, Christina De Nicola of MLB.com reports.
Analysis
The 31-year-old right-hander did enough this spring to stick around the 26-man roster, producing a 3.12 ERA and 7:3 K:BB over 8.2 Grapefruit League innings. Petersen should handle a low-leverage role after contributing a 4.00 ERA, 1.39 WHIP and 17:7 K:BB in 18 big-league innings last season split between Atlanta and Miami.
The 31-year-old right-hander did enough this spring to stick around the 26-man roster, producing a 3.12 ERA and 7:3 K:BB over 8.2 Grapefruit League innings. Petersen should handle a low-leverage role after contributing a 4.00 ERA, 1.39 WHIP and 17:7 K:BB in 18 big-league innings last season split between Atlanta and Miami.
Pitching Stats
Loading Pitching Stats...
2026 MLB Game Log
2026
2025
2024
Minor League Game Log
Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
11
Last 10 Games
11
Last 5 Games
11
How many pitches does Michael Petersen generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Michael Petersen generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2024
-14%
BAA vs LHP
2026
No Stats
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2024vs Left | .238 | 15 | 11 | 15 | 4 | |||
| Since 2024vs Right | .276 | 18 | 7 | 24 | 2 | |||
| 2026vs Left | .000 | 2 | 0 | 0 | 0 | |||
| 2026vs Right | .000 | 0 | 0 | 0 | 0 | |||
| 2025vs Left | .242 | 8 | 4 | 8 | 3 | |||
| 2025vs Right | .263 | 9 | 3 | 10 | 0 | |||
| 2024vs Left | .250 | 5 | 7 | 7 | 1 | |||
| 2024vs Right | .292 | 9 | 4 | 14 | 2 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2024
-12%
ERA at Home
2026
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2024Home | 4.50 | 1.64 | 14.0 | 9.6 | 3.9 | ||||
| Since 2024Away | 5.11 | 1.38 | 24.2 | 6.6 | 4.4 | ||||
| 2026Home | 0.00 | 0.00 | 1.0 | 18.0 | 0.0 | ||||
| 2026Away | 0 | 0 | 0 | 0 | 0 | ||||
| 2025Home | 1.23 | 1.77 | 7.1 | 9.8 | 4.9 | ||||
| 2025Away | 5.91 | 1.13 | 10.2 | 7.6 | 2.5 | ||||
| 2024Home | 9.53 | 1.76 | 5.2 | 7.9 | 3.2 | ||||
| 2024Away | 4.50 | 1.57 | 14.0 | 5.8 | 5.8 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Michael Petersen compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
2.43K/9
8.5BB/9
3.5HR/9
1.5Fastball
97.6 mphERA
4.00WHIP
1.39BABIP
.308GB/FB
0.68Left On Base
67.3%Exit Velocity
82.7 mphBarrels/BBE
4.9%Spin Rate
2305 rpmBalls Hit 95+ MPH
25.5%Swinging Strike
11.6%Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
More Fantasy News
Blows save in extras
Petersen blew the save in Friday's extra-innings victory at Texas. He allowed two runs (one earned) on one hit and no walks over one inning with no strikeouts.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Summoned from Triple-A
The Marlins recalled Petersen from Triple-A Jacksonville on Monday.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Shipped to Miami
Atlanta traded Petersen to the Marlins on Wednesday in exchange for cash, Christina De Nicola of MLB.com reports.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
DFA'd by Atlanta
Atlanta designated Petersen for assignment Sunday.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Sent back to Triple-A
Atlanta optioned Petersen to Triple-A Gwinnett following Friday's 13-0 loss to Philadelphia.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.