Regular-season careers from the StatVault encyclopedia — the same tables as each player's profile.
| Aroldis Chapman | Stat | Fritz Ostermueller |
|---|---|---|
| 17 | Seasons | 15 |
| 33.9 | Career VAL | 29.9 |
| 5.1 (2025) | Peak-season VAL | 5.6 (1946) |
| 6× | All-Star Selections | — |
| 0 | Black ink (league-leading seasons) | — |
| 7 | Gray ink (top-10 finishes) | — |
VAL is Value Above League — regular-season production measured against the league at the same position group (MLB VAL board). Black and gray ink count seasons from 1950 on.
| Aroldis Chapman | Stat | Fritz Ostermueller |
|---|---|---|
| Career | ||
| 916 | Games | 399 |
| Batting | ||
| 0 | Hits | 175 |
| 0 | RBI | 62 |
| 1 | Runs | 60 |
| 0 | Stolen bases | 1 |
| 0 | Walks | 35 |
| .000 | ||
| Batting avg |
|---|
| .234 |
| .000 | On-base % | .270 |
|---|
| .000 | Slugging % | .274 |
|---|
| -100 | OPS+ | 48 |
|---|
| Pitching | ||
|---|---|---|
| 63 | Wins | 114 |
| 52 | Losses | 115 |
| 402 | Saves | 15 |
| 873.0 | Innings pitched | 2066.2 |
| 1,402 | Strikeouts (pitching) | 774 |
| 2.48 | ERA | 3.99 |
| 1.08 | WHIP | 1.45 |
| 165 | ERA+ | 106 |
| Age | Aroldis Chapman | Fritz Ostermueller |
|---|---|---|
| 23 | 0.2 | — |
| 24 | 4.1 | — |
| 25 | 1.3 | — |
| 26 | 2.5 | 3.1 |
| 27 | 2.8 | 2.3 |
| 28 | 4.1 | 0.4 |
| 29 | 2.3 | 2.3 |
| 30 | 2.4 | 2.7 |
| 31 | 3.9 | 1.8 |
| 32 | — | 0 |
| 33 | 0.2 | 0.8 |
| 34 | 0 | 0.6 |
| 35 | 1.6 | 1.1 |
| 36 | 0.5 | 5.5 |
| 37 | 5.1 | 0 |
| 38 | 2.9 | 5.6 |
| 39 | — | 2.3 |
| 40 | — | 1.4 |