Odds, predictions, standings, and expert analysis for every MLB game
Aaron Bummer
Throws L · 2026 player profile
Quality of contact allowed
10-game rolling xwOBA
2026-03-28 — 2026-08-06 · 21 recorded dates. Lower xwOBA means less expected production allowed.
Next Matchup
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No upcoming matchup in this schedule snapshot.
Our picks on Bummer
Saved upcoming picks
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Pick record checked Oct 13, 2026 ET. Local preview uses saved data.
Our past picks
Original reasoning and recorded results.
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Inside the repertoire
What he throws, how it moves, and when he uses it.
The arsenal
| Pitch | Usage | Velo | Whiff% | xwOBA | EV | HMov | VMov | Spin |
|---|---|---|---|---|---|---|---|---|
| SinkerSI | 39% | 90.3 | 11.5% | 0.402 | 92.4 | 14.3 | 0.1 | 1998 |
| CurveballCU | 22% | 80.2 | 17.1% | 0.382 | 90.8 | -12.3 | -7.4 | 2300 |
| SweeperSW | 21% | 80.6 | 33.3% | 0.301 | 84.5 | -13.5 | 0.0 | 2300 |
| CutterFC | 10% | 87.7 | 20.0% | 0.269 | 90.4 | 1.0 | 8.3 | 2163 |
| 4-Seam FastballFF | 8% | 90.6 | 12.5% | 0.678 | 101.4 | 8.7 | 10.8 | 2175 |
Contact allowed by location
Heatmap · exit velocity in mph · catcher’s view. Choose a pitch type above to filter measured contact.
Data detail
Season & career
Updated 2026-10-13. Seasons are split by team. Innings use baseball notation: .1 is one out, .2 is two outs.
| Season / team | G | GS | IP | K | BB | ERA | WHIP |
|---|---|---|---|---|---|---|---|
| 2026 · | 21 | 0 | 16.2 | 13 | 11 | 10.26 | 2.10 |
| 2026 · Kansas City Royals | 2 | 0 | 1.1 | 0 | 1 | 40.50 | 5.25 |
| 2026 · Atlanta Braves | 19 | 0 | 15.1 | 13 | 10 | 7.63 | 1.83 |
| 2025 · Atlanta Braves | 42 | 2 | 54.1 | 51 | 17 | 3.81 | 1.25 |
| 2024 · Atlanta Braves | 56 | 0 | 55.1 | 69 | 18 | 3.58 | 1.43 |
| 2023 · Chicago White Sox | 61 | 0 | 58.1 | 78 | 36 | 6.79 | 1.53 |
| 2022 · Chicago White Sox | 32 | 0 | 26.2 | 30 | 10 | 2.36 | 1.50 |
| 2021 · Chicago White Sox | 62 | 0 | 56.1 | 75 | 29 | 3.51 | 1.26 |
| 2020 · Chicago White Sox | 9 | 0 | 9.1 | 14 | 5 | 0.96 | 1.07 |
| 2019 · Chicago White Sox | 58 | 0 | 67.2 | 60 | 24 | 2.13 | 0.99 |
| 2018 · Chicago White Sox | 37 | 0 | 31.2 | 35 | 10 | 4.26 | 1.58 |
| 2017 · Chicago White Sox | 30 | 0 | 22.0 | 17 | 15 | 4.50 | 1.27 |
| Career | 408 | 2 | 398.1 | 442 | 175 | 4.07 | 1.35 |
Recorded game dates 21 dates
Existing chart-builder observations, grouped by date. Not an official box-score game log; missing values stay blank.
| Date | PA* | xwOBA | BA | EV (mph) | Barrel fraction |
|---|---|---|---|---|---|
| 2026-08-06 | 4 | 0.563 | 0.667 | 85.0 | 0.000 |
| 2026-08-02 | 7 | 0.227 | 0.571 | 80.2 | 0.000 |
| 2026-05-18 | 11 | 0.599 | 0.500 | 100.8 | 0.400 |
| 2026-05-14 | 4 | 0.070 | 0.000 | 91.4 | 0.000 |
| 2026-05-08 | 3 | 0.067 | 0.000 | 96.6 | 0.000 |
| 2026-05-04 | 5 | 0.377 | 0.500 | 99.2 | 0.000 |
| 2026-05-03 | 5 | 0.465 | 0.600 | 86.0 | 0.250 |
| 2026-04-30 | 3 | 0.256 | 0.000 | 88.6 | 0.000 |
| 2026-04-28 | 5 | 0.582 | 0.400 | 90.5 | 0.200 |
| 2026-04-26 | 5 | 0.289 | 0.200 | 96.3 | 0.250 |
*PA is the count of appearances with a positive wOBA denominator.
How to read these numbers
Sample: 88 pa
Compared with 2026 pitchers with a recorded value and at least 50 batters faced.
Sample: 63 bip
Compared with 2026 pitchers with a recorded value and at least 30 batted balls.
Sample: 59 bip
Compared with 2026 pitchers with a recorded value and at least 30 batted balls.
Sample: 56 bip
Compared with 2026 pitchers with a recorded value and at least 50 batters faced.
