BIGLEAGUE

Omaha Storm Chasers · Pitcher · #36

Aaron Bummer

Age 326' 3" · 215lbBats L · Throws LDebut 2017From Valencia

ERA

10.26

W-L

1-2

K

13

WHIP

2.10

WAR

-0.9

FIP

9.14

League Percentile

2026 season · percentile vs 290 relievers with 20+ IP
the entire league54relief pitchers290
ERA
0
10.26
WHIP
0
2.10
Strikeouts
1
13
K/9
18
7.02
Wins
23
1
Bottom of leagueAverage (50)Top of league

⚠ Below the 20 IP threshold. Percentiles are for reference only.

relief pitchers · by ERA

Top 100%

Aaron Bummer's ERA (10.26) ranks below 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 Season2110.2612016.213112.10
Career4084.0722225398.14421751.35

Hover over a stat for its definition.

ARSENAL

Pitch arsenal · 2026 usage and average velocity
Sinker38.7%avg 145 km/h
Sweeper21.6%avg 130 km/h
Curveball21.3%avg 129 km/h
Cutter10.1%avg 141 km/h
Four-Seam8.2%avg 146 km/h

ADVANCED

Advanced metrics · 2026 season

BABIP

.309

K/9

7.02

BB/9

5.94

HR/9

3.78

Quality starts

0

Whiff%

19.5%

GAME LOG

Last 10 games · includes team result
DateOppInningsHitsERWalksStrikeoutsTeam
08.06vs MIN0.12310L
08.02@ COL1.04300L
05.18@ MIA1.03651L
05.14vs CHC1.10001L
05.08@ LAD1.00000L
05.04@ SEA0.22011L
05.03@ COL1.03202W
04.30vs DET0.20011L
04.28vs DET1.02200W
04.26vs PHI1.01001W

SPLITS

Situational splits (2026)

Home

Opp AVG.250
IP8.2
K7
WHIP1.38

Home

Opp AVG.667
IP0.1
K0
WHIP9.00

Home

Opp AVG.282
IP9.0
K7
WHIP1.67

Away

Opp AVG.321
IP6.2
K6
WHIP2.40

Away

Opp AVG.571
IP1.0
K0
WHIP4.00

Away

Opp AVG.371
IP7.2
K6
WHIP2.61

vs LHP

Opp AVG.273
IP8.0
K7
WHIP1.88

vs LHP

Opp AVG.750
IP0.1
K0
WHIP9.00

vs LHP

Opp AVG.324
IP8.1
K7
WHIP2.16

vs RHP

Opp AVG.290
IP7.1
K6
WHIP1.77

vs RHP

Opp AVG.500
IP1.0
K0
WHIP4.00

vs RHP

Opp AVG.324
IP8.1
K6
WHIP2.04

RISP

Opp AVG.238
IP5.2
K5
WHIP1.94

RISP

Opp AVG.667
IP0.2
K0
WHIP6.00

RISP

Opp AVG.333
IP6.1
K5
WHIP2.37

YEAR BY YEAR

Year-by-year · Career trends

ERALower is better

▲ Trending down year over year
ERA by yearFrom 4.50 in 2017 to 10.26 in 2026. Lower is better for this stat.2017 ERA: 4.504.5020172018 ERA: 4.2620182019 ERA: 2.1320192020 ERA: 0.960.9620202021 ERA: 3.5120212022 ERA: 2.3620222023 ERA: 6.7920232024 ERA: 3.5820242025 ERA: 3.8120252026 ERA: 10.2610.262026
Show yearly figures
ERA year-by-year details
YearERA
20174.50
20184.26
20192.13
20200.96
20213.51
20222.36
20236.79
20243.58
20253.81
202610.26

WHIPLower is better

▲ Trending down year over year
WHIP by yearFrom 1.27 in 2017 to 2.10 in 2026. Lower is better for this stat.2017 WHIP: 1.271.2720172018 WHIP: 1.5820182019 WHIP: 0.990.9920192020 WHIP: 1.0720202021 WHIP: 1.2620212022 WHIP: 1.5020222023 WHIP: 1.5320232024 WHIP: 1.4320242025 WHIP: 1.2520252026 WHIP: 2.102.102026
Show yearly figures
WHIP year-by-year details
YearWHIP
20171.27
20181.58
20190.99
20201.07
20211.26
20221.50
20231.53
20241.43
20251.25
20262.10

Strikeouts

▼ Trending down year over year
Strikeouts by yearFrom 17 in 2017 to 13 in 2026.2017 Strikeouts: 171720172018 Strikeouts: 3520182019 Strikeouts: 6020192020 Strikeouts: 1420202021 Strikeouts: 7520212022 Strikeouts: 3020222023 Strikeouts: 787820232024 Strikeouts: 6920242025 Strikeouts: 5120252026 Strikeouts: 13132026
Show yearly figures
Strikeouts year-by-year details
YearStrikeouts
201717
201835
201960
202014
202175
202230
202378
202469
202551
202613
YearTeamGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2017CWS304.5013022.017151.27
2018CWS374.2601031.235101.58
2019CWS582.1300167.260240.99
2020CWS90.961009.11451.07
2021CWS623.5155256.175291.26
2022CWS322.3621226.230101.50
2023CWS616.7955058.178361.53
2024ATL563.5843055.169181.43
2025ATL423.8132054.151171.25
2026ATL197.6311015.113101.83
2026KC240.500101.1015.25
2026—2110.2612016.213112.10