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
K: -0.5 runs (Runs saved by strikeouts vs lg-avg K%)-1KBB: -0.2 runs (Runs saved by walk suppression vs lg-avg BB%)-0BBCONTACT: -10.6 runs (Runs saved on contact quality (HR suppression) vs lg)-11CONTACTSTAM: +1.3 runs (Replacement credit for innings volume)+1STAMTotal WAR: -1.06 (31 IP)-1.1WAR
0.00.1-0.12628
Grades · Statcast · Arsenal · Contract
Scouting Grades
STUF5050
CTRL5555
CMD5555
K†6060
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.

YearAge LvlTeam GGSIPBF KBBHR GS%IP/G K%BB%K-BB%HR% ERAFIP 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)
201622MIX MLE2 levels150177518700%1.121.8%14.2%7.7%0.0%4.863.05
201622MIX RAW2 levels150177518700%1.124.0%9.3%14.7%0.0%4.862.20
201723MIX MLE4 levels58171295713182%1.219.5%12.4%7.1%2.9%3.684.62-0.1
201723MIX RAW4 levels58171295713182%1.224.1%10.5%13.6%2.7%3.683.87+0.6
201824MIX MLE2 levels68062272652010%0.922.6%7.5%15.0%0.4%3.472.35+1.6
201824MIX RAW2 levels68062272652010%0.923.9%7.4%16.5%0.4%3.472.19+1.8
201925MIX MLE2 levels63075294662440%1.222.9%8.4%14.5%1.5%2.153.05+1.3
201925MIX RAW2 levels63075294662440%1.222.4%8.2%14.3%1.4%2.152.99+1.4
202026MLB MLEChicago White Sox9093814500%1.036.8%13.2%23.7%0.0%0.961.66+0.3
202026MLB RAWChicago White Sox9093814500%1.036.8%13.2%23.7%0.0%0.961.71+0.3
202127MLB MLEChicago White Sox62056242752630%0.931.0%10.7%20.2%1.2%3.512.51+1.4
202127MLB RAWChicago White Sox62056242752630%0.931.0%10.7%20.2%1.2%3.512.51+1.4
202228MIX MLE2 levels34029127321120%0.825.6%8.5%17.1%1.7%2.832.94+0.6
202228MIX RAW2 levels34029127321120%0.825.2%8.7%16.5%1.6%2.832.93+0.6
202329MLB MLEChicago White Sox61058267783340%1.029.2%12.4%16.9%1.5%6.793.01+1.1
202329MLB MLEChicago White Sox61058267783340%1.029.2%12.4%16.9%1.5%6.793.01+1.1
202329MLB RAWChicago White Sox61058267783340%1.029.2%12.4%16.9%1.5%6.793.01+1.1
202430MLB MLEAtlanta Braves56055244691620%1.028.3%6.6%21.7%0.8%3.581.99+1.7
202430MLB MLEAtlanta Braves56055244691620%1.028.3%6.6%21.7%0.8%3.581.99+1.7
202430MLB RAWAtlanta Braves56055244691620%1.028.3%6.6%21.7%0.8%3.581.94+1.7
202531MLB MLEAtlanta Braves42254235511335%1.321.7%5.5%16.2%1.3%3.812.67+1.2
202531MLB MLEAtlanta Braves42254235511335%1.321.7%5.5%16.2%1.3%3.812.67+1.2
202531MLB RAWAtlanta Braves42254235511335%1.321.7%5.5%16.2%1.3%3.812.66+1.2
▸ Career totals (raw MLB only — as recorded)
MLB Career40823981728442160300%1.025.6%9.3%16.3%1.7%4.073.06+7.1
▸ 2026 season
YTD32MLB MLEKansas City Royals31127129261293%0.914.8%12.5%2.3%8.6%7.678.16-1.1
YTD32MLB MLEKansas City Royals31127129261293%0.914.8%12.5%2.3%8.6%7.678.16-1.1
▸ 2026 season — so far · projected rest · full
202632ROK RAWKC212730050%1.042.9%0.0%42.9%0.0%0.00-0.52
202632AAA RAWKC8083410120%1.029.4%2.9%26.5%5.9%4.324.22
202632MLB RAWKC2101788131170%0.814.8%12.5%2.3%8.0%10.267.80-0.6
SO FAR32MLB RAWKC2101788131170%0.814.8%12.5%2.3%8.0%10.267.80-0.6
ROS32MLB MLEKC404194100%1.121.7%7.7%14.0%2.1%3.743.39+0.1
ROS32MLB CTXKC404174100%1.021.7%7.7%14.0%2.1%3.743.39+0.1
2026 TOT32MLB MLEKC311483013920.4%9.1%11.3%6.4%7.117.48-1.0
FULL32MLB A+CKC21893013933.7%15.1%18.6%10.5%10.587.94-0.7
▸ Career projection (2027+) — MLB context, MLB playing time (IP × MLB%)
202733MLB MLEKC46049206441760%1.121.2%8.3%12.8%3.0%4.454.42+0.1
202834MLB MLEKC42044187381760%1.120.3%8.8%11.4%3.3%4.614.72-0.1
202733MLB CTXKC47049207441760%1.021.2%8.3%12.8%3.0%4.454.42+0.1
202834MLB CTXKC42044186381660%1.020.3%8.8%11.4%3.3%4.614.72-0.1
▸ Career totals — MLB only (actual + projected)
Career RAW50124962140528195430%1.024.7%9.1%15.5%2.0%4.153.27+7.5
/ 200 IP RAW202120086321379170%1.024.7%9.1%15.5%2.0%4.153.27+3.0
Career MLE49945152218541212391%1.024.4%9.6%14.8%1.8%3.923.22+7.1
/ 200 IP MLE194220086221083151%1.024.4%9.6%14.8%1.8%3.923.22+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).

Player162sIP/yrK%BB%HR/9ERA
OGILVIE CAREER PROJECTION0.74922.0%7.9%1.054.21
Trevor Gott ('23)1.05122.0%7.4%0.793.97
Noé Ramirez ('22)1.35224.8%9.0%1.334.19
Jarlín García ('22)1.56119.6%7.8%1.333.79
Derek Law ('24)1.56021.5%8.9%0.883.47
Josh Winckowski ('24)1.27718.3%8.2%1.134.21
Robert Gsellman ('21)1.76718.4%7.8%0.964.38