| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Scott | HOU | 9.79 | 198805060_HOU_WAS |
| Dwight Gooden | NYN | 6.55 | 198805060_CIN_NYN |
| Rick Reuschel | SFN | 2.35 | 198805070_SFN_CHN |
| Fernando Valenzuela | LAN | 2.24 | 198805060_LAN_SLN |
| John Tudor | SLN | 1.94 | 198805070_LAN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -4.27 | 198805050_TEX_MIL |
| Juan Nieves | MIL | -4.02 | 198805070_MIL_KCA |
| Mike Morgan | BAL | -2.79 | 198805070_CHA_BAL |
| Rick Mahler | ATL | -2.68 | 198805050_ATL_WAS |
| Rich Yett | CLE | -2.65 | 198805050_CLE_SEA |
Based on accumulated WAA for this season up to 1988-05-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.37 | Dave LaPoint | 44.7 | CHA |
| +004+ | 2.29 | Ron Darling | 46 | NYN |
| +005+ | 2.28 | Kevin Gross | 52.7 | PHI |
| +006+ | 2.27 | Orel Hershiser | 46.7 | LAN |
| +008+ | 2.22 | Bob Walk | 40 | PIT |
| +011+ | 2.16 | Pascual Perez | 53 | WAS |
| +012+ | 2.13 | Chris Bosio | 58 | MIL |
| +014+ | 2.11 | Greg Swindell | 51.7 | CLE |
| +013+ | 2.11 | Larry McWilliams | 25.7 | SLN |
| +015+ | 2.08 | Dwight Gooden | 53 | NYN |
| +016+ | 2.05 | Mike Scott | 56 | HOU |
| +017+ | 2 | Roger Clemens | 58 | BOS |
| +018+ | 1.98 | Rick Reuschel | 42.7 | SFN |
| +019+ | 1.97 | Bob Knepper | 28 | HOU |
| +023+ | 1.75 | Tom Candiotti | 52.3 | CLE |
| +025+ | 1.71 | Charlie Hough | 53.3 | TEX |
| +026+ | 1.64 | Greg Maddux | 54.3 | CHN |
| +029+ | 1.6 | John Tudor | 20 | SLN |
| +030+ | 1.55 | Paul Kilgus | 44.7 | TEX |
| +031+ | 1.51 | Frank Viola | 51.7 | MIN |
| +035+ | 1.39 | John Farrell | 46 | CLE |
| +036+ | 1.36 | Bill Wegman | 45 | MIL |
| +041+ | 1.29 | Brian Fisher | 29.3 | PIT |
| +044+ | 1.27 | Teddy Higuera | 39.3 | MIL |
| +045+ | 1.26 | Jim Deshaies | 32 | HOU |
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