Boston Red Sox· #44· Pitcher
Aroldis Chapman “The Missile”
Bats L · Throws L·Age 38 (Feb 28, 1988)·6' 4", 235 lb·Holguin, Cuba
2026 Pitching
ERA
1.81
WHIP
1.16
IP
44.2
K%
31.2
BB%
10.8
K/9
11.69
W-L
2-4
GS
0
SV
30
HLD
0
DiamondIQ WAR
44.7 IP · 2026
1.2
12.2 runs above replacement
FIP · 2.47 (park 1.01)0.0
vs replacement · RP, 44.7 IP+12.2
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Four-Seam36% · 96.9 · 18% whiff
Sinker34% · 97.9 · 30% whiff
Slider18% · 85.9 · 46% whiff
Splitter11% · 90.2 · 36% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Boston Red Sox | 2 | 4 | 1.81 | 46 | 0 | 30 | 44.2 | 58 | 20 | 1.16 | 11.69 |
| 2025 | Boston Red Sox | 5 | 3 | 1.17 | 67 | 0 | 32 | 61.1 | 85 | 15 | 0.70 | 12.47 |
| 2024 | Pittsburgh Pirates | 5 | 5 | 3.79 | 68 | 0 | 14 | 61.2 | 98 | 39 | 1.35 | 14.30 |
| 2023 | — | 6 | 5 | 3.09 | 61 | 0 | 6 | 58.1 | 103 | 36 | 1.25 | 15.89 |
| 2023 | Texas Rangers | 2 | 3 | 3.72 | 30 | 0 | 4 | 29.0 | 50 | 16 | 1.28 | 15.52 |
Recent Games
Aug 24 @ Miami MarlinsW
1.0 IP, 0 ER, 1 K, 0 BB
Aug 23 vs San Francisco GiantsW
1.0 IP, 0 ER, 1 K, 0 BB
Aug 21 vs San Francisco GiantsW
1.0 IP, 0 ER, 3 K, 1 BB
Aug 19 vs Arizona DiamondbacksL
1.0 IP, 0 ER, 1 K, 1 BB
Aug 15 @ Pittsburgh PiratesW
1.0 IP, 0 ER, 2 K, 0 BB
Aug 9 vs AthleticsL
1.0 IP, 1 ER, 0 K, 1 BB
Aug 6 vs Chicago White SoxW
1.0 IP, 1 ER, 0 K, 0 BB
Aug 1 @ Los Angeles DodgersW
1.0 IP, 0 ER, 1 K, 0 BB
Jul 30 @ AthleticsW
1.0 IP, 0 ER, 2 K, 0 BB
Jul 29 @ AthleticsW
1.0 IP, 0 ER, 2 K, 0 BB