| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.08 | 198807250_BOS_TEX |
| Ted Higuera | MIL | 5.92 | 198807250_MIL_NYA |
| Pascual Perez | WAS | 4.73 | 198807240_WAS_CIN |
| Bob Walk | PIT | 3.32 | 198807250_PIT_SLN |
| Mike Scott | HOU | 3.27 | 198807240_PHI_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -4.97 | 198807240_CLE_ANA |
| Steve Trout | SEA | -3.87 | 198807230_TOR_SEA |
| Bobby Witt | TEX | -2.11 | 198807230_TEX_MIL |
| Scott Bailes | CLE | -1.7 | 198807230_CLE_ANA |
| Bert Blyleven | MIN | -1.46 | 198807230_BAL_MIN |
Based on accumulated WAA for this season up to 1988-07-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.89 | Roger Clemens | 184 | BOS |
| +003+ | 6.07 | Frank Viola | 154 | MIN |
| +005+ | 5.5 | Greg Maddux | 169.7 | CHN |
| +009+ | 4.75 | Pascual Perez | 104.3 | WAS |
| +016+ | 4.4 | Mark Gubicza | 153.3 | KCA |
| +017+ | 4.37 | Teddy Higuera | 136 | MIL |
| +019+ | 4.23 | David Cone | 131.7 | NYN |
| +022+ | 4.09 | Dennis Martinez | 148 | WAS |
| +024+ | 4.01 | Tim Leary | 134.7 | LAN |
| +027+ | 3.78 | Orel Hershiser | 153.7 | LAN |
| +028+ | 3.75 | Bob Walk | 140 | PIT |
| +030+ | 3.61 | John Tudor | 122 | SLN |
| +032+ | 3.47 | Jose Rijo | 114.3 | CIN |
| +034+ | 3.16 | Dwight Gooden | 157.7 | NYN |
| +035+ | 3.09 | Danny Jackson | 143.7 | CIN |
| +037+ | 2.94 | Rick Reuschel | 135.3 | SFN |
| +041+ | 2.73 | Jeff Robinson | 126.3 | DET |
| +045+ | 2.59 | Allan Anderson | 115.3 | MIN |
| +046+ | 2.48 | Charlie Hough | 165.3 | TEX |
| +052+ | 2.41 | Jim Deshaies | 118.7 | HOU |
| +054+ | 2.35 | John Smiley | 131.3 | PIT |
| +057+ | 2.28 | Bob Knepper | 122 | HOU |
| +056+ | 2.28 | Jimmy Key | 58.7 | TOR |
| +059+ | 2.26 | Joe Magrane | 72.3 | SLN |
| +061+ | 2.25 | Kevin Gross | 154.7 | PHI |
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