Aaron Bummer
P
Kansas City Royals
Age 32
LHP
6'3" / 215 lbs
MLB
peak 0.7 · 2026
2026 ROS PROJECTION27 act + 4 ip · rates below = ROS only
showingROS
wRC+ AGAINSTvL 8189vR 98
ERA3.74
FIP3.39
K%21.7%
BB%7.7%
K-BB%14.0%
ROS IP4
Value2026 · WAR
Runs saved vs league avg · 31 IP
Grades · Statcast · Arsenal · Contract
Statcast Percentiles
FB Velo
p1090.6
Whiff%
p1019.5%
K%
p1014.8%
xwOBA vs
p100.382
CT (10%)
FB (47%)
SI (39%)
CU (21%)
SL-0.6 (21%)
Contract
No contract data on file. Pre-MLB players and minor-league free agents do not yet have salary projections — entries are added at first 40-man roster placement.
Career Stats + Projections
Real MLB stats plus park-adjusted projections — this season (so far / rest / full), then future seasons and career totals.
basis chips:
RAW = as recorded ·
CTX = with park/league context ·
A+C = actual + context combined ·
MLE = level/park-neutral
Methodology▸ how WAR & MLE are computed
Stats are park-neutral MLB equivalents. The "TEAM" column shows current org affiliation only — we do NOT project at that team's park.
Rates (K%, BB%, HR-BF) are park-stripped; MiLB stat lines are translated to their MLB-equivalent via per-level MLE factors.
WAR is computed from projected runs prevented vs a replacement pitcher (the marginal arm a team would call up if this pitcher were unavailable) — calibrated to industry-standard fWAR.
| Year | Age | Lvl | Team | G | GS | IP | BF | K | BB | HR | GS% | IP/G | K% | BB% | K-BB% | HR% | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▸ Career — actual stats, one row per year (as recorded, no adjustments) | |||||||||||||||||||
| ▸ Career — adjusted (each season translated to a park/league-neutral MLB-equivalent line; levels combined per year) | |||||||||||||||||||
| ▸ Model inputs — neutral MLE (past 3 seasons + 2026 so far) | |||||||||||||||||||
| 2016 | 22 | MIX MLE | 2 levels | 15 | 0 | 17 | 75 | 18 | 7 | 0 | 0% | 1.1 | 21.8% | 14.2% | 7.7% | 0.0% | 4.86 | 3.05 | — |
| 2016 | 22 | MIX RAW | 2 levels | 15 | 0 | 17 | 75 | 18 | 7 | 0 | 0% | 1.1 | 24.0% | 9.3% | 14.7% | 0.0% | 4.86 | 2.20 | — |
| 2017 | 23 | MIX MLE | 4 levels | 58 | 1 | 71 | 295 | 71 | 31 | 8 | 2% | 1.2 | 19.5% | 12.4% | 7.1% | 2.9% | 3.68 | 4.62 | -0.1 |
| 2017 | 23 | MIX RAW | 4 levels | 58 | 1 | 71 | 295 | 71 | 31 | 8 | 2% | 1.2 | 24.1% | 10.5% | 13.6% | 2.7% | 3.68 | 3.87 | +0.6 |
| 2018 | 24 | MIX MLE | 2 levels | 68 | 0 | 62 | 272 | 65 | 20 | 1 | 0% | 0.9 | 22.6% | 7.5% | 15.0% | 0.4% | 3.47 | 2.35 | +1.6 |
| 2018 | 24 | MIX RAW | 2 levels | 68 | 0 | 62 | 272 | 65 | 20 | 1 | 0% | 0.9 | 23.9% | 7.4% | 16.5% | 0.4% | 3.47 | 2.19 | +1.8 |
| 2019 | 25 | MIX MLE | 2 levels | 63 | 0 | 75 | 294 | 66 | 24 | 4 | 0% | 1.2 | 22.9% | 8.4% | 14.5% | 1.5% | 2.15 | 3.05 | +1.3 |
| 2019 | 25 | MIX RAW | 2 levels | 63 | 0 | 75 | 294 | 66 | 24 | 4 | 0% | 1.2 | 22.4% | 8.2% | 14.3% | 1.4% | 2.15 | 2.99 | +1.4 |
| 2020 | 26 | MLB MLE | Chicago White Sox | 9 | 0 | 9 | 38 | 14 | 5 | 0 | 0% | 1.0 | 36.8% | 13.2% | 23.7% | 0.0% | 0.96 | 1.66 | +0.3 |
| 2020 | 26 | MLB RAW | Chicago White Sox | 9 | 0 | 9 | 38 | 14 | 5 | 0 | 0% | 1.0 | 36.8% | 13.2% | 23.7% | 0.0% | 0.96 | 1.71 | +0.3 |
| 2021 | 27 | MLB MLE | Chicago White Sox | 62 | 0 | 56 | 242 | 75 | 26 | 3 | 0% | 0.9 | 31.0% | 10.7% | 20.2% | 1.2% | 3.51 | 2.51 | +1.4 |
| 2021 | 27 | MLB RAW | Chicago White Sox | 62 | 0 | 56 | 242 | 75 | 26 | 3 | 0% | 0.9 | 31.0% | 10.7% | 20.2% | 1.2% | 3.51 | 2.51 | +1.4 |
| 2022 | 28 | MIX MLE | 2 levels | 34 | 0 | 29 | 127 | 32 | 11 | 2 | 0% | 0.8 | 25.6% | 8.5% | 17.1% | 1.7% | 2.83 | 2.94 | +0.6 |
| 2022 | 28 | MIX RAW | 2 levels | 34 | 0 | 29 | 127 | 32 | 11 | 2 | 0% | 0.8 | 25.2% | 8.7% | 16.5% | 1.6% | 2.83 | 2.93 | +0.6 |
| 2023 | 29 | MLB MLE | Chicago White Sox | 61 | 0 | 58 | 267 | 78 | 33 | 4 | 0% | 1.0 | 29.2% | 12.4% | 16.9% | 1.5% | 6.79 | 3.01 | +1.1 |
| 2023 | 29 | MLB MLE | Chicago White Sox | 61 | 0 | 58 | 267 | 78 | 33 | 4 | 0% | 1.0 | 29.2% | 12.4% | 16.9% | 1.5% | 6.79 | 3.01 | +1.1 |
| 2023 | 29 | MLB RAW | Chicago White Sox | 61 | 0 | 58 | 267 | 78 | 33 | 4 | 0% | 1.0 | 29.2% | 12.4% | 16.9% | 1.5% | 6.79 | 3.01 | +1.1 |
| 2024 | 30 | MLB MLE | Atlanta Braves | 56 | 0 | 55 | 244 | 69 | 16 | 2 | 0% | 1.0 | 28.3% | 6.6% | 21.7% | 0.8% | 3.58 | 1.99 | +1.7 |
| 2024 | 30 | MLB MLE | Atlanta Braves | 56 | 0 | 55 | 244 | 69 | 16 | 2 | 0% | 1.0 | 28.3% | 6.6% | 21.7% | 0.8% | 3.58 | 1.99 | +1.7 |
| 2024 | 30 | MLB RAW | Atlanta Braves | 56 | 0 | 55 | 244 | 69 | 16 | 2 | 0% | 1.0 | 28.3% | 6.6% | 21.7% | 0.8% | 3.58 | 1.94 | +1.7 |
| 2025 | 31 | MLB MLE | Atlanta Braves | 42 | 2 | 54 | 235 | 51 | 13 | 3 | 5% | 1.3 | 21.7% | 5.5% | 16.2% | 1.3% | 3.81 | 2.67 | +1.2 |
| 2025 | 31 | MLB MLE | Atlanta Braves | 42 | 2 | 54 | 235 | 51 | 13 | 3 | 5% | 1.3 | 21.7% | 5.5% | 16.2% | 1.3% | 3.81 | 2.67 | +1.2 |
| 2025 | 31 | MLB RAW | Atlanta Braves | 42 | 2 | 54 | 235 | 51 | 13 | 3 | 5% | 1.3 | 21.7% | 5.5% | 16.2% | 1.3% | 3.81 | 2.66 | +1.2 |
| ▸ Career totals (raw MLB only — as recorded) | |||||||||||||||||||
| MLB Career | — | 408 | 2 | 398 | 1728 | 442 | 160 | 30 | 0% | 1.0 | 25.6% | 9.3% | 16.3% | 1.7% | 4.07 | 3.06 | +7.1 | ||
| ▸ 2026 season | |||||||||||||||||||
| YTD | 32 | MLB MLE | Kansas City Royals | 31 | 1 | 27 | 129 | 26 | 12 | 9 | 3% | 0.9 | 14.8% | 12.5% | 2.3% | 8.6% | 7.67 | 8.16 | -1.1 |
| YTD | 32 | MLB MLE | Kansas City Royals | 31 | 1 | 27 | 129 | 26 | 12 | 9 | 3% | 0.9 | 14.8% | 12.5% | 2.3% | 8.6% | 7.67 | 8.16 | -1.1 |
| ▸ 2026 season — so far · projected rest · full | |||||||||||||||||||
| 2026 | 32 | ROK RAW | KC | 2 | 1 | 2 | 7 | 3 | 0 | 0 | 50% | 1.0 | 42.9% | 0.0% | 42.9% | 0.0% | 0.00 | -0.52 | — |
| 2026 | 32 | AAA RAW | KC | 8 | 0 | 8 | 34 | 10 | 1 | 2 | 0% | 1.0 | 29.4% | 2.9% | 26.5% | 5.9% | 4.32 | 4.22 | — |
| 2026 | 32 | MLB RAW | KC | 21 | 0 | 17 | 88 | 13 | 11 | 7 | 0% | 0.8 | 14.8% | 12.5% | 2.3% | 8.0% | 10.26 | 7.80 | -0.6 |
| SO FAR | 32 | MLB RAW | KC | 21 | 0 | 17 | 88 | 13 | 11 | 7 | 0% | 0.8 | 14.8% | 12.5% | 2.3% | 8.0% | 10.26 | 7.80 | -0.6 |
| ROS | 32 | MLB MLE | KC | 4 | 0 | 4 | 19 | 4 | 1 | 0 | 0% | 1.1 | 21.7% | 7.7% | 14.0% | 2.1% | 3.74 | 3.39 | +0.1 |
| ROS | 32 | MLB CTX | KC | 4 | 0 | 4 | 17 | 4 | 1 | 0 | 0% | 1.0 | 21.7% | 7.7% | 14.0% | 2.1% | 3.74 | 3.39 | +0.1 |
| 2026 TOT | 32 | MLB MLE | KC | — | — | 31 | 148 | 30 | 13 | 9 | — | — | 20.4% | 9.1% | 11.3% | 6.4% | 7.11 | 7.48 | -1.0 |
| FULL | 32 | MLB A+C | KC | — | — | 21 | 89 | 30 | 13 | 9 | — | — | 33.7% | 15.1% | 18.6% | 10.5% | 10.58 | 7.94 | -0.7 |
| ▸ Career projection (2027+) — MLB context, MLB playing time (IP × MLB%) | |||||||||||||||||||
| 2027 | 33 | MLB MLE | KC | 46 | 0 | 49 | 206 | 44 | 17 | 6 | 0% | 1.1 | 21.2% | 8.3% | 12.8% | 3.0% | 4.45 | 4.42 | +0.1 |
| 2028 | 34 | MLB MLE | KC | 42 | 0 | 44 | 187 | 38 | 17 | 6 | 0% | 1.1 | 20.3% | 8.8% | 11.4% | 3.3% | 4.61 | 4.72 | -0.1 |
| 2027 | 33 | MLB CTX | KC | 47 | 0 | 49 | 207 | 44 | 17 | 6 | 0% | 1.0 | 21.2% | 8.3% | 12.8% | 3.0% | 4.45 | 4.42 | +0.1 |
| 2028 | 34 | MLB CTX | KC | 42 | 0 | 44 | 186 | 38 | 16 | 6 | 0% | 1.0 | 20.3% | 8.8% | 11.4% | 3.3% | 4.61 | 4.72 | -0.1 |
| ▸ Career totals — MLB only (actual + projected) | |||||||||||||||||||
| Career | — | RAW | 501 | 2 | 496 | 2140 | 528 | 195 | 43 | 0% | 1.0 | 24.7% | 9.1% | 15.5% | 2.0% | 4.15 | 3.27 | +7.5 | |
| / 200 IP | — | RAW | 202 | 1 | 200 | 863 | 213 | 79 | 17 | 0% | 1.0 | 24.7% | 9.1% | 15.5% | 2.0% | 4.15 | 3.27 | +3.0 | |
| Career | — | MLE | 499 | 4 | 515 | 2218 | 541 | 212 | 39 | 1% | 1.0 | 24.4% | 9.6% | 14.8% | 1.8% | 3.92 | 3.22 | +7.1 | |
| / 200 IP | — | MLE | 194 | 2 | 200 | 862 | 210 | 83 | 15 | 1% | 1.0 | 24.4% | 9.6% | 14.8% | 1.8% | 3.92 | 3.22 | +2.9 | |
Career Comps
Retired MLB careers whose totals most resemble what we're projecting for this player. Pool: 133 completed pitcher careers (2015-2024).
| Player | 162s | IP/yr | K% | BB% | HR/9 | ERA |
|---|---|---|---|---|---|---|
| OGILVIE CAREER PROJECTION | 0.7 | 49 | 22.0% | 7.9% | 1.05 | 4.21 |
| Trevor Gott ('23) | 1.0 | 51 | 22.0% | 7.4% | 0.79 | 3.97 |
| Noé Ramirez ('22) | 1.3 | 52 | 24.8% | 9.0% | 1.33 | 4.19 |
| Jarlín García ('22) | 1.5 | 61 | 19.6% | 7.8% | 1.33 | 3.79 |
| Derek Law ('24) | 1.5 | 60 | 21.5% | 8.9% | 0.88 | 3.47 |
| Josh Winckowski ('24) | 1.2 | 77 | 18.3% | 8.2% | 1.13 | 4.21 |
| Robert Gsellman ('21) | 1.7 | 67 | 18.4% | 7.8% | 0.96 | 4.38 |