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Aaron Bummer
Aaron Bummer
Omaha Storm Chasers • Pitcher
Age 33 • 6' 3" • 215 lb
Bats: L • Throws: L
MLB Debut: 2017-07-27
Born: Valencia , CA • USA
Draft: 2014
2026 Stats
W
1
L
1
ERA
7.63
WHIP
1.83
IP
15.1
SO
13
SV
0
HLD
4
G
19
GS
0
Career Stats
W
22
L
22
ERA
4.07
WHIP
1.35
IP
398.1
SO
442
SV
5
HLD
94
G
408
GS
2
Year-by-Year Pitching
Year Team GGSIP WLSVSO ERAWHIPAwards
2017 CWS 30 — 22.0 1 3 — 17 4.50 1.27
2018 CWS 37 — 31.2 — 1 — 35 4.26 1.58
2019 CWS 58 — 67.2 — — 1 60 2.13 0.99
2020 CWS 9 — 9.1 1 — — 14 0.96 1.07
2021 CWS 62 — 56.1 5 5 2 75 3.51 1.26
2022 CWS 32 — 26.2 2 1 2 30 2.36 1.50
2023 CWS 61 — 58.1 5 5 — 78 6.79 1.53
2024 ATL 56 — 55.1 4 3 — 69 3.58 1.43
2025 ATL 42 2 54.1 3 2 — 51 3.81 1.25
2026 Total 21 — 16.2 1 2 — 13 10.26 2.10
Spring Training
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2017 CWS 9—6.1 —1—8 2.841.74
2018 CWS 10—10.0 ———13 3.601.10
2019 CWS 7—6.0 ———9 12.003.00
2020 CWS 4—4.1 ———5 0.000.46
2021 CWS 7—6.2 1——8 5.400.75
2022 CWS 6—7.0 ———8 5.140.86
2023 CWS 2—1.2 ———3 0.000.60
2024 ATL 8—8.1 ———7 6.481.68
2025 ATL 7—6.2 ———5 0.000.90
2026 ATL 5—5.1 ———6 0.000.38
Postseason
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2020 CWS 2—1.1 ———1 0.001.50
2021 CWS 3—3.1 —1—7 8.101.80
2024 ATL 1—2.2 ———1 0.000.38
Game Logs
Season selector loads one year at a time.
Pitching
Date Opponent IP H R ER BB SO HR
2026-08-06 vs MIN 0.1 2 3 3 1 0 0
2026-08-02 @ COL 1.0 4 3 3 0 0 1
2026-05-18 @ MIA 1.0 3 6 6 5 1 2
2026-05-14 vs CHC 1.1 0 0 0 0 1 0
2026-05-08 @ LAD 1.0 0 0 0 0 0 0
2026-05-04 @ SEA 0.2 2 0 0 1 1 0
2026-05-03 @ COL 1.0 3 2 2 0 2 1
2026-04-30 vs DET 0.2 0 0 0 1 1 0
2026-04-28 vs DET 1.0 2 2 2 0 0 1
2026-04-26 vs PHI 1.0 1 2 0 0 1 1
2026-04-24 vs PHI 1.0 1 0 0 0 0 0
2026-04-21 @ WSH 1.0 0 0 0 0 1 0
2026-04-20 @ WSH 0.1 0 0 0 0 0 0
2026-04-19 @ PHI 0.1 1 0 0 0 0 0
2026-04-13 vs MIA 1.0 4 3 3 0 2 1
2026-04-11 vs CLE 0.2 0 0 0 2 0 0
2026-04-10 vs CLE 0.1 0 0 0 0 0 0
2026-04-07 @ LAA 0.1 0 0 0 1 0 0
2026-04-06 @ LAA 1.0 0 0 0 0 1 0
2026-03-30 vs ATH 1.0 1 0 0 0 2 0
2026-03-28 vs KC 0.2 0 0 0 0 0 0
Transactions
Entire history • newest first.
2026-08-07
Kansas City Royals optioned LHP Aaron Bummer to Omaha Storm Chasers.
2026-08-02
Kansas City Royals selected the contract of LHP Aaron Bummer from Omaha Storm Chasers.
2026-07-21
Kansas City Royals signed free agent LHP Aaron Bummer to a minor league contract.
2026-06-01
Chicago Cubs signed free agent LHP Aaron Bummer to a minor league contract.
2026-05-19
Atlanta Braves released LHP Aaron Bummer.
2026-04-16
LHP Aaron Bummer changed number to 49.
2026-04-15
LHP Aaron Bummer changed number to 42.
2025-11-06
Atlanta Braves activated LHP Aaron Bummer from the 60-day injured list.
2025-09-18
Atlanta Braves transferred LHP Aaron Bummer from the 15-day injured list to the 60-day injured list. Left shoulder inflammation.
2025-08-24
Atlanta Braves placed LHP Aaron Bummer on the 15-day injured list. Left shoulder inflammation.
2025-04-16
LHP Aaron Bummer changed number to 49.
2025-04-15
LHP Aaron Bummer changed number to 42.
2025-04-14
Atlanta Braves activated LHP Aaron Bummer from the bereavement list.
2025-04-11
Atlanta Braves placed LHP Aaron Bummer on the bereavement list.
2023-11-16
Chicago White Sox traded LHP Aaron Bummer to Atlanta Braves for RHP Michael Soroka, LHP Jared Shuster, SS Nicky Lopez, SS Braden Shewmake and RHP Riley Gowens.
2022-09-05
Chicago White Sox activated LHP Aaron Bummer from the 60-day injured list.
2022-09-02
Chicago White Sox placed LHP Aaron Bummer on the 60-day injured list. Left lat strain.
2022-08-30
Chicago White Sox sent LHP Aaron Bummer on a rehab assignment to Charlotte Knights.
2022-06-12
Chicago White Sox placed LHP Aaron Bummer on the 15-day injured list retroactive to June 9, 2022. Left lat strain.
2022-05-22
Chicago White Sox activated LHP Aaron Bummer from the 15-day injured list.
2022-05-09
Chicago White Sox placed LHP Aaron Bummer on the 15-day injured list retroactive to May 7, 2022. Right knee strain.
2021-07-15
Chicago White Sox activated LHP Aaron Bummer from the 10-day injured list.
2021-06-30
Chicago White Sox placed LHP Aaron Bummer on the 10-day injured list. Right hamstring strain.
2020-09-24
Chicago White Sox activated P Aaron Bummer from the 60 day injured list.
2020-09-24
Chicago White Sox activated LHP Aaron Bummer from the 60-day injured list.
2020-09-24
Chicago White Sox activated P Aaron Bummer from the 60 day injured list.
2020-09-05
Chicago White Sox transferred LHP Aaron Bummer from the 10-day injured list to the 60-day injured list. Left biceps strain.
2020-08-08
Chicago White Sox placed LHP Aaron Bummer on the 10-day injured list. Left biceps strain.
2019-04-28
Chicago White Sox recalled LHP Aaron Bummer from Charlotte Knights.
2019-03-18
Chicago White Sox optioned LHP Aaron Bummer to Charlotte Knights.
2018-09-01
Chicago White Sox recalled Aaron Bummer from Charlotte Knights.
2018-06-07
Chicago White Sox optioned LHP Aaron Bummer to Charlotte Knights.
2018-02-16
Aaron Bummer changed number to .
2017-07-27
Chicago White Sox selected the contract of LHP Aaron Bummer from Charlotte Knights.
2017-01-23
Chicago White Sox invited non-roster LHP Aaron Bummer to spring training.
2014-06-10
Chicago White Sox signed LHP Aaron Bummer.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2026
Ready
Basic Line
Season / Game
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Pitch Arsenal
Usage • Velo • Break • Spin • xwOBA
Pitch N Use% Velo HB IVB Spin xwOBA Whiff% Zone% Chase% BNStuff+ BNCtrl+
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Notes
Primary pitch summary
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Movement Profile (Induced Break)
Pitcher's View: HB vs Rise / Drop (in)
Circles: 12/18/24 in • Dots = pitch types (size ~ pitch count)
Pitch Location Heatmaps
KDE-style blur • fixed zone • catcher POV
vs. LHH
vs. RHH
Zone: left -0.7083 / right 0.7083 • bot 1.595 / top 3.394 • Domain: X [-2,2], Z [0,5]
Statcast Game Log
Per-game pitch metrics from Statcast
Date Pitches Velo BNStuff+ BNCtrl+ Whiff% Zone% Chase% K% BB% xwOBA
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