Pitcher · 2025
John Rooney
- Age
- 28
- B/T
- R/L
- Height
- 6' 5"
- Weight
- 215 lb
- Number
- #64
- Born
- January 28, 1997 in Melrose, NY, USA
- MLB debut
- August 24, 2025
- Drafted
- 2018, round 3
- College
- Hofstra
- dbWAR
- -.1 1 season(s)
- IP
- 1.1
- ERA
- 6.75
- FIP
- 12.14
- K/9
- 13.5
- FIP−
- 292 100 = avg
John Rooney is a relief pitcher for the Houston Astros. In 2025 he struck out 2 batters over 1.1 innings across 1 appearance, going 0-0. His ERA of 6.75 was 62.3% higher than the league average of 4.16. Stripping out defence, his 12.14 FIP suggests that his ERA had some help behind him. He missed bats on 50.0% of swings (17.4% of every pitch he threw), walked 16.7% of the batters he faced and struck out 33.3%. His -0.1 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, 2025.
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 | 4 | 3 | 0 | 0 | 1 | 2 | .000 | .250 | .000 | .180 | 50.0% |
| vs RHB | 2 | 2 | 1 | 1 | 0 | 0 | .500 | .500 | 2.000 | 1.002 | 0.0% |
Pitch sequencing
What John Rooney throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what John Rooney throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2025.
| Sweeper | 14 | 81.5 | 2,651 | 64.3% | 42.9% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 1 | 0 | 1.1 | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 6.75 | 12.14 | 1.50 | 13.5 | 6.8 | 162 | 292 | -0.1 | — |
Head to head
Put John Rooney beside up to three others.
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.