BIGLEAGUE

Boston Red Sox · Pitcher · #44

Aroldis Chapman

Age 386' 4" · 235lbBats L · Throws LDebut 2010From Holguin

ERA

1.81

W-L

2-4

K

58

WHIP

1.16

WAR

1.4

FIP

2.51

Awards

11 major honors

Reliever of the Year ×2

2019 · 2025

All-Star ×9

2012 · 2013 · 2014 · 2015 · 2018 · 2019 · 2021 · 2025 · 2026

League Percentile

2026 season · percentile vs 290 relievers with 20+ IP
the entire league54relief pitchers290
ERA
96
1.81
WHIP
72
1.16
Strikeouts
77
58
K/9
93
11.69
Wins
45
2
Bottom of leagueAverage (50)Top of league

relief pitchers · by ERA

Top 4%

Aroldis Chapman's ERA (1.81) ranks above average among 290 relievers with 20+ IP. The number on each bar is a percentile (higher is better); use the tabs to change the comparison pool.

PITCHING

Season · Career
CategoryGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2026 Season461.81243044.258201.16
Career9092.486252397866.013894281.08

Hover over a stat for its definition.

ARSENAL

Pitch arsenal · 2026 usage and average velocity
Four-Seam36.0%avg 156 km/h
Sinker34.4%avg 158 km/h
Slider18.4%avg 138 km/h
Splitter11.2%avg 145 km/h

ADVANCED

Advanced metrics · 2026 season

BABIP

.288

K/9

11.69

BB/9

4.03

HR/9

0.40

Quality starts

0

Whiff%

29.2%

GAME LOG

Last 10 games · includes team result
DateOppInningsHitsERWalksStrikeoutsTeam
08.24@ MIA1.01001W
08.23vs SF1.00001W
08.21vs SF1.00013W
08.19vs AZ1.00011L
08.15@ PIT1.00002W
08.09vs ATH1.02110L
08.06vs CWS1.01100W
08.01@ LAD1.00001W
07.30@ ATH1.01002W
07.29@ ATH1.01002W

SPLITS

Situational splits (2026)

Home

Opp AVG.207
IP23.2
K29
WHIP1.44

Away

Opp AVG.182
IP21.0
K29
WHIP0.86

vs LHP

Opp AVG.188
IP13.0
K17
WHIP1.23

vs RHP

Opp AVG.198
IP31.1
K41
WHIP1.15

RISP

Opp AVG.167
IP12.0
K14
WHIP1.08

YEAR BY YEAR

Year-by-year · Career trends

ERALower is better

▲ Trending down year over year
ERA by yearFrom 2.03 in 2010 to 1.81 in 2026. Lower is better for this stat.2010 ERA: 2.032.0320102011 ERA: 3.6020112012 ERA: 1.5120122013 ERA: 2.5420132014 ERA: 2.0020142015 ERA: 1.6320152016 ERA: 1.5520162017 ERA: 3.2220172018 ERA: 2.4520182019 ERA: 2.2120192020 ERA: 3.0920202021 ERA: 3.3620212022 ERA: 4.464.4620222023 ERA: 3.0920232024 ERA: 3.7920242025 ERA: 1.171.1720252026 ERA: 1.811.812026
Show yearly figures
ERA year-by-year details
YearERA
20102.03
20113.60
20121.51
20132.54
20142.00
20151.63
20161.55
20173.22
20182.45
20192.21
20203.09
20213.36
20224.46
20233.09
20243.79
20251.17
20261.81

WHIPLower is better

▲ Trending down year over year
WHIP by yearFrom 1.05 in 2010 to 1.16 in 2026. Lower is better for this stat.2010 WHIP: 1.051.0520102011 WHIP: 1.3020112012 WHIP: 0.8120122013 WHIP: 1.0420132014 WHIP: 0.8320142015 WHIP: 1.1520152016 WHIP: 0.8620162017 WHIP: 1.1320172018 WHIP: 1.0520182019 WHIP: 1.1120192020 WHIP: 0.8620202021 WHIP: 1.3120212022 WHIP: 1.431.4320222023 WHIP: 1.2520232024 WHIP: 1.3520242025 WHIP: 0.700.7020252026 WHIP: 1.161.162026
Show yearly figures
WHIP year-by-year details
YearWHIP
20101.05
20111.30
20120.81
20131.04
20140.83
20151.15
20160.86
20171.13
20181.05
20191.11
20200.86
20211.31
20221.43
20231.25
20241.35
20250.70
20261.16

Strikeouts

▼ Trending down year over year
Strikeouts by yearFrom 19 in 2010 to 58 in 2026.2010 Strikeouts: 191920102011 Strikeouts: 7120112012 Strikeouts: 12212220122013 Strikeouts: 11220132014 Strikeouts: 10620142015 Strikeouts: 11620152016 Strikeouts: 9020162017 Strikeouts: 6920172018 Strikeouts: 9320182019 Strikeouts: 8520192020 Strikeouts: 2220202021 Strikeouts: 9720212022 Strikeouts: 4320222023 Strikeouts: 10320232024 Strikeouts: 9820242025 Strikeouts: 8520252026 Strikeouts: 58582026
Show yearly figures
Strikeouts year-by-year details
YearStrikeouts
201019
201171
2012122
2013112
2014106
2015116
201690
201769
201893
201985
202022
202197
202243
2023103
202498
202585
202658
YearTeamGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2010CIN152.0322013.11951.05
2011CIN543.6041150.071411.30
2012CIN681.51553871.2122230.81
2013CIN682.54453863.2112291.04
2014CIN542.00033654.0106240.83
2015CIN651.63443366.1116331.15
2016NYY312.01302031.14480.89
2016CHC281.01111626.246100.83
2016—591.55413658.090180.86
2017NYY523.22432250.169201.13
2018NYY552.45303251.193301.05
2019NYY602.21323757.085251.11
2020NYY133.0911311.22240.86
2021NYY613.36643056.197381.31
2022NYY434.4644936.143281.43
2023KC312.4542229.153201.23
2023TEX303.7223429.050161.28
2023—613.0965658.1103361.25
2024PIT683.79551461.298391.35
2025BOS671.17533261.185150.70
2026BOS461.81243044.258201.16