Aaron Bummer
P · 10 seasons · 2017 – 2026 · B/T: L/L
Few careers score higher: Aaron Bummer sits 1st of 0 pitchers all-time in roto value, built over 10 seasons. 2019 was the high-water mark, worth +2.7, 140th that season and 9772nd of 51,303 player-seasons on record. On the credit side, ERA (+1.0). On the debit side, saves (-1.8), WHIP (-1.4) and strikeouts (-0.6).
Hitting
Best Season
-1.98
2021 · #50,746 all-time
Career Z
-18.4
summed
Avg / Season
-2.04
longevity-neutral
Seasons
9
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2017 | CWS | 30 | -2.07 | #594 | #61,375 |
| 2018 | CWS | 37 | -2.08 | #600 | #61,965 |
| 2019 | CWS | 58 | -2.07 | #603 | #60,884 |
| 2020 | CWS | 9 | -2.06 | #508 | #58,654 |
| 2021★ | CWS | 62 | -1.98 | #625 | #50,746 |
| 2022 | CWS | 32 | -2.02 | #580 | #53,628 |
| 2023 | CWS | 61 | -2.05 | #565 | #56,873 |
| 2024 | ATL | 56 | -2.04 | #564 | #55,925 |
| 2025 | ATL | 42 | -2.01 | #554 | #52,712 |
★ Best season by Z
Pitching
Best Season
2.70
2019 · #9,772 all-time
Career Z
-4.1
summed
Avg / Season
-0.41
longevity-neutral
Seasons
10
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2017 | CWS | 30 | -1.47 | #410 | #26,390 |
| 2018 | CWS | 37 | -2.02 | #523 | #31,863 |
| 2019★ | CWS | 58 | 2.70 | #140 | #9,772 |
| 2020 | CWS | 9 | 0.15 | #277 | #17,779 |
| 2021 | CWS | 62 | 2.08 | #189 | #11,350 |
| 2022 | CWS | 32 | -0.34 | #323 | #19,989 |
| 2023 | CWS | 61 | -1.85 | #526 | #29,729 |
| 2024 | ATL | 56 | 0.18 | #282 | #17,643 |
| 2025 | ATL | 42 | 0.25 | #297 | #17,342 |
| 2026 | ATL | 21 | -3.76 | #843 | #49,341 |
★ Best season by Z