| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 15.36 | 198806040_TOR_BOS |
| Orel Hershiser | LAN | 4.87 | 198806040_CIN_LAN |
| Ron Darling | NYN | 4.31 | 198806040_CHN_NYN |
| Ted Higuera | MIL | 4.25 | 198806040_ANA_MIL |
| Bob Welch | OAK | 3.49 | 198806050_OAK_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dan Petry | ANA | -2.95 | 198806040_ANA_MIL |
| Tom Glavine | ATL | -1.9 | 198806050_ATL_SDN |
| Jeff Sellers | BOS | -1.41 | 198806050_TOR_BOS |
| Jeff Robinson | DET | -0.82 | 198806050_CLE_DET |
| Allan Anderson | MIN | -0.8 | 198806050_OAK_MIN |
Based on accumulated WAA for this season up to 1988-06-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.37 | Roger Clemens | 111 | BOS |
| +005+ | 3.65 | Bob Knepper | 68.3 | HOU |
| +006+ | 3.43 | David Cone | 64.7 | NYN |
| +007+ | 3.42 | Ron Darling | 93 | NYN |
| +008+ | 3.4 | John Tudor | 55 | SLN |
| +009+ | 3.39 | Greg Maddux | 97.3 | CHN |
| +013+ | 3.08 | Teddy Higuera | 80 | MIL |
| +014+ | 3 | Greg Swindell | 96.7 | CLE |
| +015+ | 2.98 | Larry McWilliams | 67.3 | SLN |
| +020+ | 2.68 | Frank Viola | 95 | MIN |
| +022+ | 2.6 | Orel Hershiser | 87.3 | LAN |
| +024+ | 2.53 | Kevin Gross | 97 | PHI |
| +031+ | 2.31 | Pascual Perez | 53 | WAS |
| +032+ | 2.31 | Dave LaPoint | 80.7 | CHA |
| +033+ | 2.28 | John Candelaria | 74.7 | NYA |
| +036+ | 2.16 | Chris Bosio | 95.3 | MIL |
| +038+ | 2.07 | Tom Candiotti | 93.3 | CLE |
| +040+ | 2 | Jim Deshaies | 66.3 | HOU |
| +041+ | 1.96 | Dennis Martinez | 82.7 | WAS |
| +044+ | 1.89 | Paul Kilgus | 83.7 | TEX |
| +043+ | 1.89 | John Farrell | 91.3 | CLE |
| +046+ | 1.83 | Jose Guzman | 92.3 | TEX |
| +047+ | 1.82 | Tom Filer | 24.7 | MIL |
| +049+ | 1.78 | Rick Reuschel | 80.7 | SFN |
| +062+ | 1.65 | Tim Leary | 71.7 | LAN |
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