| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +085+ | 3.42 | 57.7 | 2.18 | 0 | 55 | NYA |
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19990424 | XXXXX | 0.35 | NYA |
| 19990508 | XXXXX | 0.64 | NYA |
| 19990522 | XXXXX | 1.02 | NYA |
| 19990605 | +074+ | 1.74 | NYA |
| 19990619 | +067+ | 2.15 | NYA |
| 19990703 | +075+ | 2.45 | NYA |
| 19990720 | +170+ | 1.46 | NYA |
| 19990803 | +164+ | 1.69 | NYA |
| 19990817 | +122+ | 2.38 | NYA |
| 19990831 | +091+ | 3.13 | NYA |
| 19990908 | +085+ | 3.42 | NYA |
| 19990920 | +076+ | 3.88 | NYA |
| 19991004 | +065+ | 4.64 | NYA |
Mariano Rivera Post Season Games
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +001+ | 9.3 | 141 | 0.77 | 0 | 96 | NYA |
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