Aaron Bummer
30-Year-Old
2024 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
2024 Fantasy Outlook
Bummer had one of his worst statistical seasons over his seven-year career in 2023. His 6.79 ERA was highest in the league among qualified relievers, while his 1.53 WHIP was 12th-worst. This is mostly due to an elevated 13.5% walk rate (his worst since his rookie season), high BABIP (.340) and poor 55.4% left-on-base percentage. However, Bummer's inflated ERA was far worse than his 3.58 xERA, suggesting he should rebound in that category. The veteran is still one of the best in the league at inducing ground balls, but Bummer threw fewer sinkers (45% pitch usage) last season in favor of more sweepers (38%). This adjustment yielded a career-high 78 strikeouts, which speaks to the upside the southpaw possesses. Bummer was recently traded to Atlanta, where he could emerge as one of the team's top setup options in 2024. Read Past Outlooks
Mixed results this spring
Bummer gave up a run on two hits while striking out two in an inning of relief during Thursday's Grapefruit League game against the Rays.
ANALYSIS
Acquired from the White Sox in the offseason, Bummer has been touched for runs in three of his five appearances this spring and has a 7.20 ERA, but he's largely been working later innings with minor-league defenders behind him. A better indication of how his camp has gone might come from his 5:0 K:BB through five innings. The 30-year-old could be the top lefty in the Atlanta bullpen to begin the year if A.J. Minter (finger) and Tyler Matzek (side) aren't ready for Opening Day, but regardless of where Bummer slots in the pecking order for setup duties, there should be plenty of leads to protect for a team that's won over 100 games each of the last two seasons.
Acquired from the White Sox in the offseason, Bummer has been touched for runs in three of his five appearances this spring and has a 7.20 ERA, but he's largely been working later innings with minor-league defenders behind him. A better indication of how his camp has gone might come from his 5:0 K:BB through five innings. The 30-year-old could be the top lefty in the Atlanta bullpen to begin the year if A.J. Minter (finger) and Tyler Matzek (side) aren't ready for Opening Day, but regardless of where Bummer slots in the pecking order for setup duties, there should be plenty of leads to protect for a team that's won over 100 games each of the last two seasons.
Pitching Stats
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2023
2022
2021
2020
2019
2018
2017
Minor League Game Log
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Left/Right Pitching Splits
Since 2022
-13%
BAA vs LHP
2024
No Stats
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2022vs Left | .231 | 38 | 18 | 27 | 0 | |||
Since 2022vs Right | .264 | 70 | 28 | 56 | 6 | |||
2024vs Left | 0 | 0 | 0 | 0 | 0 | |||
2024vs Right | 0 | 0 | 0 | 0 | 0 | |||
2023vs Left | .231 | 26 | 11 | 18 | 0 | |||
2023vs Right | .238 | 52 | 25 | 35 | 4 | |||
2022vs Left | .231 | 12 | 7 | 9 | 0 | |||
2022vs Right | .323 | 18 | 3 | 21 | 2 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2022
-12%
ERA on Road
2024
No Stats
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2022Home | 5.77 | 1.79 | 39.0 | 13.2 | 5.8 | ||||
Since 2022Away | 5.09 | 1.28 | 46.0 | 10.0 | 4.1 | ||||
2024Home | 0 | 0 | 0 | 0 | 0 | ||||
2024Away | 0 | 0 | 0 | 0 | 0 | ||||
2023Home | 7.31 | 1.84 | 28.1 | 14.6 | 6.4 | ||||
2023Away | 6.30 | 1.23 | 30.0 | 9.6 | 4.8 | ||||
2022Home | 1.69 | 1.69 | 10.2 | 9.3 | 4.2 | ||||
2022Away | 2.81 | 1.38 | 16.0 | 10.7 | 2.8 | ||||
More Splits→ | View More Split Stats |
Stat Review
How does Aaron Bummer compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
2.17K/9
12.0BB/9
5.6HR/9
0.6Fastball
94.4 mphERA
6.79WHIP
1.53BABIP
.362GB/FB
3.22Left On Base
52.8%Exit Velocity
82.2 mphBarrels/BBE
2.5%Spin Rate
2206 rpmBalls Hit 95+ MPH
29.3%Swinging Strike
11.6%Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Aaron Bummer See More
Brad Johnson concludes his deep dive into pitching staffs with the National League East, where in Atlanta, Spencer Strider is at the top of his game.
Todd Zola considers a new approach to regressing a pitcher's BABIP, which suggests better days should be ahead for Hunter Greene.
Jason Collette takes a look at middle relievers who could have fantasy value next season without earning saves, including Baltimore's DL Hall.
Brad Johnson check in on ever-changing closing situations, and in New York, the Mets are hopeful Edwin Diaz could be back at the end of September.
Past Fantasy Outlooks
2023
2022
2021
2020
2019
2018
Bummer required two IL stints in 2022, first a minimum stay early in the season for a sore knee, then a more lengthy 3-month absence due to a shoulder/lat injury. This limited the southpaw to only 26.2 innings last season. Injuries appear to be part of the package for the 29-year-old, who has now missed time on the IL during each of the past three years. When healthy, Bummer is adept at inducing ground balls, as his career rate is 67.6%, which is roughly 25% above league average. He walks about four batters per nine innings, though, and the frequent grounders could lead to some BABIP and ratio instability. However, Bummer's role as one of the White Sox primary setup men appears secure, so expect him to provide holds as long as he's healthy.
More Fantasy News
Dealt to Atlanta
Bummer was traded from the White Sox to Atlanta on Thursday in exchange for Michael Soroka (forearm), Jared Shuster, Nicky Lopez, Braden Shewmake and Riley Gowens.
ANALYSIS
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Getting looks in high leverage
Bummer has recorded three holds in his last five appearances for the White Sox.
ANALYSIS
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Scheduled to pitch Friday
Bummer (lat) is scheduled to appear in Friday's Cactus League game against the Athletics, Scott Merkin of MLB.com reports.
ANALYSIS
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Throws first bullpen session
Bummer (lat) threw a bullpen session Thursday, James Fegan of The Athletic reports.
ANALYSIS
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On track with shoulder/lat issue
White Sox manager Pedro Grifol said Wednesday that Bummer (shoulder/lat) is on track to be ready for Opening Day, Daryl Van Schouwen of the Chicago Sun-Times reports.
ANALYSIS
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