Not enough days in 2003 season to compile WAA record.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 20030410 | XXXXX | 0.60 | NYA |
| 20030424 | +014+ | 1.63 | NYA |
| 20030508 | +002+ | 3.26 | NYA |
| 20030522 | +008+ | 3.27 | NYA |
| 20030605 | +038+ | 2.43 | NYA |
| 20030619 | +024+ | 3.18 | NYA |
| 20030703 | +061+ | 2.76 | NYA |
| 20030720 | +051+ | 3.31 | NYA |
| 20030803 | +048+ | 3.80 | NYA |
| 20030817 | +025+ | 5.32 | NYA |
| 20030831 | +039+ | 4.93 | NYA |
| 20030914 | +029+ | 5.66 | NYA |
| 20030928 | +056+ | 4.73 | NYA |
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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