Not enough days in 1999 season to compile WAA record.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19990416 | XXXXX | 0.13 | SLN |
| 19990430 | XXXXX | 0.36 | SLN |
| 19990514 | +084+ | 1.25 | SLN |
| 19990528 | +040+ | 2.03 | SLN |
| 19990611 | +031+ | 2.88 | SLN |
| 19990625 | +030+ | 3.49 | SLN |
| 19990709 | +025+ | 4.05 | SLN |
| 19990726 | +015+ | 5.38 | SLN |
| 19990809 | +007+ | 6.90 | SLN |
| 19990823 | +004+ | 8.45 | SLN |
| 19990906 | +006+ | 8.38 | SLN |
| 19990920 | +005+ | 9.65 | SLN |
| 19991004 | +004+ | 10.62 | SLN |
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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