Not enough days in 1988 season to compile WAA record.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19880428 | +019+ | 1.58 | OAK |
| 19880512 | +008+ | 2.52 | OAK |
| 19880526 | +016+ | 2.88 | OAK |
| 19880609 | +032+ | 2.24 | OAK |
| 19880623 | +043+ | 2.25 | OAK |
| 19880707 | +061+ | 2.06 | OAK |
| 19880724 | +040+ | 2.79 | OAK |
| 19880807 | +050+ | 2.65 | OAK |
| 19880821 | +028+ | 4.30 | OAK |
| 19880904 | +034+ | 4.39 | OAK |
| 19880918 | +032+ | 4.75 | OAK |
| 19881002 | +023+ | 5.82 | OAK |
Mark McGwire Post Season Games
| Rank | WAA | BA | OBP | PA | Rbis | Runs | Tm |
|---|---|---|---|---|---|---|---|
| XXXXX | -0.29 | 0.228 | 0.328 | 134 | 13 | 12 | OAK |
| XXXXX | -0.16 | 0.133 | 0.235 | 17 | 1 | 1 | SLN |
| XXXXX | -0.45 | 0.217 | 0.318 | 151 | 14 | 13 | TOT |
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