Players · P · Pitcher · 2026
Michael Petersen
- Age
- 32
- B/T
- R/R
- Height
- 6' 7"
- Weight
- 195 lb
- Number
- #49
- Born
- May 16, 1994 in Middlesex, United Kingdom
- MLB debut
- June 18, 2024
- College
- Riverside CC
- dbWAR
- .9 3 season(s)
- IP
- 64.1
- ERA
- 3.08
- FIP
- 3.09
- K/9
- 11.3
- FIP−
- 74 100 = avg
Michael Petersen is a relief pitcher for the Miami Marlins. In 2026 he struck out 81 batters over 64.1 innings across 64 appearances, going 3-4. His ERA of 3.08 is 26.3% lower than the league average of 4.18 — the third best on his team, and 102nd of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 3.09 FIP suggests the ERA was no fluke. He missed bats on 30.5% of swings (15.4% of every pitch he threw), walked 10.6% of the batters he faced and struck out 30.7%. His 1.2 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
WAR by season
Pitching
Standard and advanced, by season.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 158 | 138 | 27 | 3 | 19 | 46 | .196 | .297 | .326 | .284 | 29.1% |
| vs RHB | 106 | 94 | 18 | 2 | 9 | 35 | .191 | .283 | .319 | .272 | 33.0% |
Pitch sequencing
What Michael Petersen throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Michael Petersen throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Four-Seam Fastball | 672 | 98.0 | 2,356 | 55.4% | 27.5% | 148 | .176 | .604 | |
| Slider | 298 | 87.7 | 2,380 | 46.6% | 40.8% | 65 | .215 | .573 | |
| Changeup | 131 | 89.7 | 1,125 | 42.0% | 27.5% | 22 | .227 | .664 |
Head to head
Put Michael Petersen beside up to three others.
Similar players
Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.