Not enough days in 1989 season to compile WAA record.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19890427 | XXXXX | 0.15 | KCA |
| 19890511 | XXXXX | 0.23 | KCA |
| 19890525 | XXXXX | 0.21 | KCA |
| 19890608 | XXXXX | 0.21 | KCA |
| 19890622 | XXXXX | 0.06 | KCA |
| 19890706 | XXXXX | 0.45 | KCA |
| 19890723 | +097+ | 1.77 | KCA |
| 19890806 | +145+ | 1.42 | KCA |
| 19890820 | +120+ | 1.85 | KCA |
| 19890903 | +083+ | 2.67 | KCA |
| 19890917 | +056+ | 3.39 | KCA |
| 19891001 | +060+ | 3.67 | KCA |
George Brett Post Season Games
| Rank | WAA | BA | OBP | PA | Rbis | Runs | Tm |
|---|---|---|---|---|---|---|---|
| +122+ | 1.56 | 0.337 | 0.397 | 184 | 23 | 30 | KCA |
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