| Starter | Tm | Tier | Game |
|---|---|---|---|
| John Tudor | SLN | 8.38 | 198806280_WAS_SLN |
| Ted Higuera | MIL | 6.94 | 198806260_MIL_ANA |
| Ron Darling | NYN | 4.89 | 198806260_NYN_CHN |
| Frank Viola | MIN | 4.55 | 198806262_MIN_OAK |
| Bob Knepper | HOU | 3 | 198806280_LAN_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Smithson | BOS | -4.41 | 198806260_BAL_BOS |
| Ed Whitson | SDN | -3.48 | 198806280_SDN_CIN |
| Willie Fraser | ANA | -3.38 | 198806260_MIL_ANA |
| Steve Trout | SEA | -2.32 | 198806280_TEX_SEA |
| Brian Fisher | PIT | -2.12 | 198806280_NYN_PIT |
Based on accumulated WAA for this season up to 1988-06-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.13 | Greg Maddux | 137.7 | CHN |
| +004+ | 4.87 | John Tudor | 91.3 | SLN |
| +005+ | 4.44 | David Cone | 95.3 | NYN |
| +006+ | 4.43 | Frank Viola | 124 | MIN |
| +008+ | 4.3 | Roger Clemens | 136.7 | BOS |
| +011+ | 3.85 | Bob Knepper | 96.7 | HOU |
| +012+ | 3.7 | Pascual Perez | 69 | WAS |
| +015+ | 3.49 | Teddy Higuera | 106.7 | MIL |
| +016+ | 3.48 | Bob Walk | 103.3 | PIT |
| +017+ | 3.44 | Ron Darling | 119.7 | NYN |
| +020+ | 3.34 | Orel Hershiser | 119 | LAN |
| +021+ | 3.19 | Mark Gubicza | 123.7 | KCA |
| +030+ | 2.73 | Kevin Gross | 120.3 | PHI |
| +031+ | 2.71 | Dave LaPoint | 110.3 | CHA |
| +035+ | 2.6 | Jim Deshaies | 92 | HOU |
| +040+ | 2.43 | Larry McWilliams | 87.3 | SLN |
| +041+ | 2.33 | Wes Gardner | 42.3 | BOS |
| +042+ | 2.31 | Dennis Martinez | 111 | WAS |
| +044+ | 2.25 | John Smiley | 103.7 | PIT |
| +046+ | 2.23 | Chris Bosio | 125.3 | MIL |
| +048+ | 2.05 | Dwight Gooden | 127.7 | NYN |
| +049+ | 2.02 | Dave Stieb | 101.7 | TOR |
| +051+ | 1.99 | Mike Scott | 109 | HOU |
| +055+ | 1.89 | Doyle Alexander | 121.7 | DET |
| +058+ | 1.86 | Paul Kilgus | 111 | TEX |
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