Regular-season careers from the StatVault encyclopedia — the same tables as each player's profile.
| Kent Mercker | Stat | Jeremy Affeldt |
|---|---|---|
| 18 | Seasons | 14 |
| 27.8 | Career VAL | 22.0 |
| 3.6 (1998) | Peak-season VAL | 4.2 (2003) |
VAL is Value Above League — regular-season production measured against the league at the same position group (MLB VAL board).
| Kent Mercker | Stat | Jeremy Affeldt |
|---|---|---|
| Career | ||
| 697 | Games | 774 |
| Batting | ||
| 28 | Hits | 3 |
| 1 | Home runs | 0 |
| 18 | RBI | 2 |
| 12 | Runs | 0 |
| 11 | Walks | 2 |
| .113 | ||
| Batting avg |
|---|
| .176 |
| .150 | On-base % | .263 |
|---|
| .161 | Slugging % | .176 |
|---|
| -16 | OPS+ | 16 |
|---|
| Pitching | ||
|---|---|---|
| 74 | Wins | 43 |
| 67 | Losses | 46 |
| 25 | Saves | 28 |
| 1325.1 | Innings pitched | 926.0 |
| 917 | Strikeouts (pitching) | 720 |
| 4.16 | ERA | 3.97 |
| 1.44 | WHIP | 1.40 |
| 104 | ERA+ | 108 |
| Age | Kent Mercker | Jeremy Affeldt |
|---|---|---|
| 22 | 0.6 | — |
| 23 | 2.5 | 0.5 |
| 24 | 1.4 | 4.2 |
| 25 | 2.7 | 1.1 |
| 26 | 3.4 | 0.1 |
| 27 | 2.9 | 0 |
| 28 | 0 | 1.7 |
| 29 | 3.3 | 2.4 |
| 30 | 3.6 | 3.4 |
| 31 | 1.7 | 0.5 |
| 32 | 0 | 2 |
| 33 | — | 2.7 |
| 34 | 0 | 0.5 |
| 35 | 1.9 | 2.9 |
| 36 | 2.3 | 0 |
| 37 | 1.5 | — |