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Aaron Bummer
Atlanta Braves · RP Throws: L Bats: L Height: 6'4 Weight: 215 Born: Sep 21, 1993 (31)
Percentile Ranks
vs LHH
vs RHH
K%
91.7
39.5
xWOBA
0.254 · 96%
0.302 · 61%
xSLG
100.0
93.0
 

Year Team G GS W-L IP ERA WHIP K% CSW% BB% xAVG xSLG xwOBA xISO BAR% SS% HH% GB% LD% FB% Z%
Z
Sw%
OZ%
OZ
Sw%
Apr May Jun Jul Aug Sep
20252700-132.13.061.3123.0%0.0%9.4%.243.303.281.0601.1%30.0%39%58%26%16%49%13%51%43% 3.9 3.7 3.0 0.0 0.0 0.0
20245604-355.13.581.4328.3%0.0%7.4%.232.283.261.0521.3%29.0%33%61%26%9%48%19%52%40% 2.6 3.7 3.4 4.8 3.8 2.5
20236105-558.16.791.5329.2%0.0%13.5%.218.303.293.0852.7%27.0%45%60%22%16%48%19%52%56% 0.6 1.6 4.2 4.0 3.4 3.1
20223202-126.22.361.5325.6%0.0%8.5%.257.355.308.0996.7%30.7%45%64%27%9%48%18%52%49% 2.4 2.3 3.0 0.0 0.0 2.3
2021White Sox6205-556.13.511.2131.4%0.0%10.9%.180.235.249.0552.2%14.2%42%77%11%10%48%17%52%64% 1.5 3.9 5.1 0.0 0.0 1.7
2020White Sox901-09.10.961.1036.8%0.0%13.2%.173.286.262.1135.3%21.1%47%68%16%16%44%21%56%54% 0.0 0.0 0.0 0.0 0.0 0.0
2019White Sox5800-067.22.130.9823.0%0.0%8.8%.189.265.246.0762.3%18.3%38%71%15%10%51%16%49%46% 0.0 0.0 0.0 0.0 0.0 0.0
2018White Sox3700-131.24.261.6024.3%0.0%6.9%.262.372.308.1107.1%30.6%43%62%25%10%51%16%49%45% 0.0 0.0 0.0 0.0 0.0 0.0


2025 Splits vs LHB vs RHB
Pitch Type MPH SPIN Whiff% Usage xBAVG xWOBA K% BB% xSLG ISO HR Usage xBAVG xWOBA K% BB% xSLG ISO HR
4-SeamerFastball MPH0%14%.483.45950.00.0.569.000065%.329.39020.020.0.392.2500
SweeperBreaking MPH28%85%.213.24826.713.3.269.182035%.050.16350.00.0.056.2500
ChangeupOffspeed MPH0%1%.000.0000.00.0.000.0000
2024 Splits vs LHB vs RHB
Pitch Type MPH SPIN Whiff% Usage xBAVG xWOBA K% BB% xSLG ISO HR Usage xBAVG xWOBA K% BB% xSLG ISO HR
4-SeamerFastball MPH0%13%.171.30240.020.0.331.000020%.188.24532.08.0.236.0450
CutterFastball87.4 MPH236924%14%.225.25533.30.0.371.50016%.326.33314.30.0.441.1430
SweeperBreaking MPH44%74%.219.21745.22.4.249.000071%.188.20050.93.5.224.0750
ChangeupOffspeed84.2 MPH176213%3%.228.2110.00.0.283.0000
2023 Splits vs LHB vs RHB
Pitch Type MPH SPIN Whiff% Usage xBAVG xWOBA K% BB% xSLG ISO HR Usage xBAVG xWOBA K% BB% xSLG ISO HR
4-SeamerFastball MPH32%4%.134.26725.025.0.136.00008%.116.25850.025.0.141.0830
CutterFastball87.2 MPH234452%8%.000.5680.00.0.531.490012%.282.39225.012.5.562.4291
SinkerFastball94.3 MPH196715%43%.314.41611.921.4.382.167045%.289.3478.312.5.406.1131
SweeperBreaking MPH45%45%.118.12545.52.3.140.047034%.175.26146.611.0.276.1112
ChangeupOffspeed88.1 MPH154867%1%.333.29466.70.0.3331.0000

Splits vs LHB vs RHB
Year PA xBAVG xWOBA xSLG ISO K% BB% HR PA xBAVG xWOBA xSLG ISO K% BB% HR
2025 62.222.254.269.09327.4%9.7%074.260.302.331.10820.3%5.4%0
2024 87.223.261.289.12731.0%6.9%2155.237.261.280.06427.1%6.5%0
2023 92.205.272.244.09028.3%12.0%0172.226.304.335.12230.2%12.8%4
2022 47.199.283.300.02625.5%14.9%070.292.325.389.12325.7%4.3%2
  Home Road
Season PA xAVG xWOBA K% BB% xSLG ISO HR PA xAVG xWOBA K% BB% xSLG ISO HR
202564.224.25329.7%3.1%.286.050072.262.30518.1%11.1%.320.1530
2024132.214.22733.3%3.8%.251.0731110.254.30222.7%10.0%.325.1041
2023138.229.31333.3%14.5%.320.1232126.208.27025.4%10.3%.286.0992
202247.249.31623.4%10.6%.363.075070.263.30427.1%7.1%.351.0942

Split Games Wind 0-9 mph+ Wind 10+ mph Humid 0-25 Humid 25-50 Humid 50-75 Humid 75-100 Temp 0-40 Temp 40-60 Temp 61-79 Temp 80+
Road 2.67 2.06 3.29 0.00 2.70 2.22 3.17 0.00 3.60 2.08 2.86
Home 4.10 3.94 5.10 0.00 3.37 4.31 5.90 0.00 5.10 3.79 5.08