Michael Petersen

Michael Petersen

31-Year-Old PitcherRP
Miami Marlins
2026 Fantasy Outlook
There was no outlook written for Michael Petersen in 2026. Check out the latest news below for more on his current fantasy value.
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.
Records first save of season
PMiami Marlins
April 9, 2026
Petersen earned the save Wednesday against the Reds with a scoreless inning, giving up two hits and striking out two.
Analysis
Petersen entered the game with a three-run lead, and while he allowed back-to-back singles to Tyler Stephenson and Noelvi Marte, he ultimately got the job done. Petersen recorded the final out with runners on second and third when he struck out Matt McLain for his first save of the season. The 31-year-old right-hander has a 5.40 ERA and 6:4 K:BB through five innings to begin the season, and he'll revert to lower-leverage usage once closer Pete Fairbanks (personal) returns to the Marlins.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2026 MLB Game Log
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2025 MLB Game Log
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
18
Last 10 Games
18
Last 5 Games
20
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+
 
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+
 
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
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
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
 
 
-21%
BAA vs LHP
2026
 
 
-53%
BAA vs LHP
2025
 
 
-8%
BAA vs LHP
2024
 
 
-14%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .218 94 16 14 17 3 0 5
Since 2024vs Right .276 108 22 8 27 6 0 2
2026vs Left .118 20 3 3 2 0 0 1
2026vs Right .250 13 4 1 3 0 0 0
2025vs Left .242 37 8 4 8 1 0 3
2025vs Right .263 42 9 3 10 2 0 0
2024vs Left .250 37 5 7 7 2 0 1
2024vs Right .292 53 9 4 14 4 0 2
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2024
 
 
-24%
ERA at Home
2026
 
 
-100%
ERA at Home
2025
 
 
-79%
ERA at Home
2024
 
 
-53%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 3.94 1.56 16.0 1 0 1 10.1 3.4 1.1
Since 2024Away 5.16 1.38 29.2 3 2 0 6.1 4.9 1.5
2026Home 0.00 0.67 3.0 1 0 1 15.0 0.0 0.0
2026Away 5.40 1.40 5.0 0 1 0 3.6 7.2 1.8
2025Home 1.23 1.77 7.1 0 0 0 9.8 4.9 1.2
2025Away 5.91 1.13 10.2 0 0 0 7.6 2.5 1.7
2024Home 9.53 1.76 5.2 0 0 0 7.9 3.2 1.6
2024Away 4.50 1.57 14.0 3 1 0 5.8 5.8 1.3
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.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
1.75
 
K/9
7.9
 
BB/9
4.5
 
HR/9
1.1
 
Fastball
96.9 mph
 
ERA
3.38
 
WHIP
1.13
 
BABIP
.204
 
GB/FB
0.54
 
Left On Base
65.8%
 
Exit Velocity
86.6 mph
 
Barrels/BBE
7.5%
 
Spin Rate
2188 rpm
 
Balls Hit 95+ MPH
22.5%
 
Swinging Strike
10.5%
 
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Michael Petersen See More
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More Fantasy News
Will begin season in majors
PMiami Marlins
March 26, 2026
Petersen has claimed a spot in the Marlins' Opening Day bullpen, Christina De Nicola of MLB.com reports.
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Blows save in extras
PMiami Marlins
September 19, 2025
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.
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Summoned from Triple-A
PMiami Marlins
September 1, 2025
The Marlins recalled Petersen from Triple-A Jacksonville on Monday.
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Shipped to Miami
PMiami Marlins
July 16, 2025
Atlanta traded Petersen to the Marlins on Wednesday in exchange for cash, Christina De Nicola of MLB.com reports.
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DFA'd by Atlanta
PAtlanta Braves
July 13, 2025
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