Players · C · Pitcher · 2025 regular season
John Curtiss
- Age
- 32
- B/T
- R/R
- Height
- 6' 5"
- Weight
- 220 lb
- Number
- #46
- Born
- April 5, 1993 in Dallas, TX, United States
- MLB debut
- August 25, 2017
- Drafted
- 2014, round 6
- College
- Texas
- High school
- Southlake
- dbWAR
- 1.1 Regular season, 9 season(s)
- IP
- 36.2
- ERA
- 3.93
- FIP
- 4.01
- K/9
- 5.9
- FIP−
- 96 100 = avg
John Curtiss was 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 0.3 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 regular season.
WAR by season
Pitching Regular season
Standard and advanced, by season. Regular-season games only — postseason games are listed separately below.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | AZ | 30 | 0 | 36.2 | 3 | 2 | 1 | 29 | 16 | 24 | 5 | 3.93 | 4.01 | 0.93 | 5.9 | 1.2 | 94 | 96 | 0.3 | |
| 2024 | COL | 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 | |
| 2023 | NYM | 15 | 0 | 19.2 | 0 | 0 | 0 | 17 | 10 | 16 | 8 | 4.58 | 4.83 | 1.27 | 7.3 | 3.7 | 106 | 112 | -0.0 | |
| 2021 | MIA/MIL | 42 | 2 | 44.1 | 3 | 1 | 0 | 42 | 17 | 44 | 12 | 3.45 | 3.82 | 1.22 | 8.9 | 2.4 | 81 | 90 | 0.5 | |
| 2020 | TB | 17 | 3 | 25.0 | 3 | 0 | 2 | 21 | 5 | 25 | 3 | 1.80 | 3.35 | 0.96 | 9.0 | 1.1 | 40 | 75 | 0.5 | |
| 2019 | LAA | 1 | 0 | 2.1 | 0 | 0 | 0 | 2 | 1 | 1 | 3 | 3.86 | 6.21 | 2.14 | 3.9 | 11.6 | 86 | 138 | -0.0 | |
| 2018 | MIN | 8 | 0 | 6.1 | 0 | 1 | 0 | 8 | 4 | 7 | 4 | 5.68 | 2.84 | 1.89 | 9.9 | 5.7 | 137 | 69 | 0.1 | |
| 2017 | MIN | 9 | 0 | 8.2 | 0 | 0 | 0 | 9 | 8 | 10 | 2 | 8.31 | 4.89 | 1.27 | 10.4 | 2.1 | 191 | 112 | 0.0 |
Batting Regular season
Standard and advanced, by season. Regular-season games only — postseason games are listed separately below.
| Trend | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | MIA | 6 | 5 | 0 | 0 | 0 | 0 | 0 | 3 | .000 | .000 | .000 | .000 | .000 | 0.0% | 60.0% | .000 | -1.3 | -122 | -0.1 | — |
Separate from the regular season
Postseason Postseason
Wild Card through World Series. These games are counted on their own: none of them are in the regular-season tables, career totals, league context, leaderboards or dbWAR on this page.
Postseason pitching
| Season | Team | Round | G | GS | IP | W | L | SV | H | ER | HR | BB | SO | ERA | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 Post | TB | Postseason total | 9 | 1 | 10.0 | 1 | 0 | 0 | 14 | 7 | 3 | 5 | 9 | 6.30 | 1.90 | 8.1 |
| ALDS | 2 | 0 | 2.1 | 0 | 0 | 0 | 6 | 5 | 1 | 2 | 2 | 19.29 | 3.43 | 7.7 | ||
| ALCS | 4 | 1 | 4.1 | 0 | 0 | 0 | 4 | 1 | 1 | 2 | 4 | 2.08 | 1.38 | 8.3 | ||
| World Series | 3 | 0 | 3.1 | 1 | 0 | 0 | 4 | 1 | 1 | 1 | 3 | 2.70 | 1.50 | 8.1 |
Box-score and rate statistics only. wOBA, wRC+, FIP and dbWAR are measured against a full league season, and a postseason is a few teams playing each other for a month, so they are not computed for October.
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, how often it misses, and what hitters do with it.
| Four-Seam Fastball | 291 | 94.3 | 2,339 | 51.2% | 21.8% | 69 | .159 | .455 | |
| Cutter | 168 | 90.5 | 2,540 | 44.0% | 18.2% | 46 | .261 | .792 | |
| Slider | 49 | 85.4 | 2,529 | 26.5% | 8.0% | 16 | .375 | 1.063 | |
| Changeup | 37 | 87.7 | 1,703 | 18.9% | 57.1% | 4 | — | — |
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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.