Pitcher · 2025
Andrew Chafin
- Age
- 35
- B/T
- R/L
- Height
- 6' 2"
- Weight
- 235 lb
- Number
- #40
- Born
- June 17, 1990 in Kettering, OH, USA
- MLB debut
- August 13, 2014
- Drafted
- 2011, round C-A
- College
- Kent State
- High school
- Western Reserve
- dbWAR
- 1.1 2 season(s)
- IP
- 33.2
- ERA
- 2.41
- FIP
- 3.46
- K/9
- 9.6
- FIP−
- 83 100 = avg
Andrew Chafin is a relief pitcher for the Washington Nationals. In 2025 he struck out 36 batters over 33.2 innings across 42 appearances, going 1-1. His ERA of 2.41 was 42.1% lower than the league average of 4.16 — the second best on his team, and 45th of 542 among MLB pitchers with 20+ innings. Stripping out defence, his 3.46 FIP suggests that his ERA had some help behind him. He missed bats on 27.7% of swings (12.7% of every pitch he threw), walked 13.3% of the batters he faced and struck out 25.2%. His 0.4 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 | 72 | 59 | 8 | 1 | 11 | 21 | .136 | .268 | .186 | .227 | 29.2% |
| vs RHB | 71 | 63 | 21 | 1 | 8 | 15 | .333 | .408 | .397 | .364 | 21.1% |
Pitch sequencing
What Andrew Chafin throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Andrew Chafin throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2025.
| Sinker | 250 | 89.7 | 2,055 | 48.0% | 19.4% | |
| Slider | 237 | 80.5 | 2,448 | 43.5% | 41.0% | |
| Four-Seam Fastball | 123 | 89.5 | 2,090 | 56.1% | 12.0% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 42 | 0 | 33.2 | 1 | 1 | 0 | 29 | 9 | 36 | 19 | 2.41 | 3.46 | 1.43 | 9.6 | 5.1 | 58 | 83 | 0.4 | |
| 2024 | 62 | 0 | 56.1 | 4 | 3 | 1 | 52 | 22 | 70 | 31 | 3.51 | 3.54 | 1.47 | 11.2 | 5.0 | 86 | 87 | 0.6 |
Head to head
Put Andrew Chafin 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.