Not enough days in 1988 season to compile WAA record.
| Date | Rank | WAA | TeamID |
|---|---|---|---|
| 19880428 | XXXXX | -0.29 | TEX |
| 19880512 | XXXXX | -0.06 | TEX |
| 19880526 | XXXXX | -0.07 | TEX |
| 19880609 | XXXXX | 0.87 | TEX |
| 19880623 | XXXXX | 1.24 | TEX |
| 19880707 | +120+ | 1.32 | TEX |
| 19880724 | +119+ | 1.47 | TEX |
| 19880807 | +122+ | 1.60 | TEX |
| 19880821 | +110+ | 1.94 | TEX |
| 19880904 | +091+ | 2.43 | TEX |
| 19880918 | +056+ | 3.38 | TEX |
| 19881002 | +069+ | 3.16 | TEX |
Ruben Sierra Post Season Games
| Rank | WAA | BA | OBP | PA | Rbis | Runs | Tm |
|---|---|---|---|---|---|---|---|
| XXXXX | 0.55 | 0.333 | 0.357 | 28 | 7 | 4 | OAK |
| XXXXX | 0.32 | 0.239 | 0.325 | 77 | 14 | 5 | NYA |
| XXXXX | 0.86 | 0.264 | 0.333 | 105 | 21 | 9 | TOT |
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