| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Scott | HOU | 7.17 | 198805230_HOU_PIT |
| Dwight Gooden | NYN | 4.63 | 198805210_NYN_LAN |
| Ted Higuera | MIL | 4.25 | 198805230_TOR_MIL |
| John Tudor | SLN | 2.89 | 198805220_HOU_SLN |
| Fernando Valenzuela | LAN | 2.09 | 198805220_NYN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Moore | SEA | -2.81 | 198805220_SEA_BAL |
| Rich Yett | CLE | -2.63 | 198805220_CLE_KCA |
| Rick Mahler | ATL | -1.78 | 198805220_ATL_PIT |
| Mike Boddicker | BAL | -1.41 | 198805230_BAL_OAK |
| Mike Birkbeck | MIL | -1.12 | 198805220_TOR_MIL |
Based on accumulated WAA for this season up to 1988-05-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.73 | Roger Clemens | 86 | BOS |
| +004+ | 3.69 | Chris Bosio | 82 | MIL |
| +005+ | 3.31 | Bob Knepper | 50.3 | HOU |
| +006+ | 3.3 | Dave LaPoint | 66 | CHA |
| +007+ | 3.1 | Greg Maddux | 81 | CHN |
| +008+ | 3.07 | Kevin Gross | 74.7 | PHI |
| +009+ | 3.06 | Tom Candiotti | 78.3 | CLE |
| +010+ | 3.05 | Ron Darling | 70 | NYN |
| +012+ | 2.91 | Greg Swindell | 74.3 | CLE |
| +017+ | 2.58 | John Candelaria | 69.7 | NYA |
| +018+ | 2.57 | Paul Kilgus | 68.3 | TEX |
| +019+ | 2.56 | John Tudor | 39.7 | SLN |
| +020+ | 2.52 | Jim Deshaies | 53.3 | HOU |
| +023+ | 2.45 | Mike Scott | 76.7 | HOU |
| +026+ | 2.36 | Pascual Perez | 53 | WAS |
| +027+ | 2.35 | David Cone | 46.3 | NYN |
| +028+ | 2.3 | Larry McWilliams | 46.3 | SLN |
| +031+ | 2.07 | Frank Viola | 73.7 | MIN |
| +033+ | 2 | Dwight Gooden | 74.7 | NYN |
| +034+ | 1.97 | Jose Guzman | 68.7 | TEX |
| +037+ | 1.9 | Doyle Alexander | 71 | DET |
| +038+ | 1.87 | Orel Hershiser | 61.7 | LAN |
| +041+ | 1.84 | Teddy Higuera | 64 | MIL |
| +054+ | 1.44 | Ray Hayward | 27.7 | TEX |
| +059+ | 1.4 | Bob Walk | 56.7 | PIT |
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