| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| +031+ | 4.74 | 171.7 | 3.62 | 25 | 0 | BAL |
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19990424 | XXXXX | -0.69 | BAL |
| 19990508 | XXXXX | 0.08 | BAL |
| 19990522 | XXXXX | 0.35 | BAL |
| 19990605 | XXXXX | 1.20 | BAL |
| 19990619 | +041+ | 2.84 | BAL |
| 19990703 | +039+ | 3.23 | BAL |
| 19990720 | +031+ | 4.02 | BAL |
| 19990803 | +033+ | 4.41 | BAL |
| 19990811 | +031+ | 4.74 | BAL |
| 19990823 | +035+ | 4.97 | BAL |
| 19990906 | +041+ | 4.95 | BAL |
| 19990920 | +060+ | 4.53 | BAL |
| 19991004 | +038+ | 5.81 | BAL |
Mike Mussina Post Season Games
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
|---|---|---|---|---|---|---|
| XXXXX | 1.06 | 42.7 | 2.53 | 6 | 0 | BAL |
| XXXXX | -0.48 | 97 | 3.8 | 15 | 2 | NYA |
| XXXXX | 0.58 | 139.7 | 3.42 | 0 | 0 | TOT |
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