Pitcher · 2025
John Curtiss
- Age
- 32
- B/T
- R/R
- Height
- 6' 5"
- Weight
- 220 lb
- Number
- #46
- Born
- April 5, 1993 in Dallas, TX, USA
- MLB debut
- August 25, 2017
- Drafted
- 2014, round 6
- College
- Texas
- High school
- Southlake
- dbWAR
- .0 2 season(s)
- IP
- 36.2
- ERA
- 3.93
- FIP
- 4.01
- K/9
- 5.9
- FIP−
- 96 100 = avg
John Curtiss is a relief pitcher for the Arizona Diamondbacks. In 2025 he struck out 24 batters over 36.2 innings across 30 appearances, going 3-2. His ERA of 3.93 was 5.6% lower than the league average of 4.16 — 9th of 18 on his team, and 261st of 542 among MLB pitchers with 20+ innings. Stripping out defence, his 4.01 FIP suggests the ERA was no fluke. He missed bats on 20.4% of swings (10.6% of every pitch he threw), walked 3.5% of the batters he faced and struck out 17.0%. His 0.2 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, 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 | 63 | 60 | 9 | 3 | 3 | 14 | .150 | .190 | .300 | .214 | 22.2% |
| vs RHB | 78 | 75 | 20 | 2 | 2 | 10 | .267 | .286 | .453 | .317 | 12.8% |
Pitch sequencing
What John Curtiss 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 Curtiss throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2025.
| Four-Seam Fastball | 291 | 94.3 | 2,339 | 51.2% | 21.8% | |
| Cutter | 168 | 90.5 | 2,540 | 44.0% | 18.2% | |
| Slider | 49 | 85.4 | 2,529 | 26.5% | 8.0% | |
| Changeup | 37 | 87.7 | 1,703 | 18.9% | 57.1% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 30 | 0 | 36.2 | 3 | 2 | 1 | 29 | 16 | 24 | 5 | 3.93 | 4.01 | 0.93 | 5.9 | 1.2 | 94 | 96 | 0.2 | |
| 2024 | 3 | 0 | 2.1 | 0 | 0 | 0 | 6 | 4 | 1 | 0 | 15.43 | 13.45 | 2.57 | 3.9 | 0.0 | 378 | 330 | -0.2 |
Head to head
Put John Curtiss beside up to three others.
Similar players
Nearest 2025 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.