| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.8 | 198807040_BOS_KCA |
| John Tudor | SLN | 7.59 | 198807040_SLN_LAN |
| Dwight Gooden | NYN | 4.01 | 198807020_HOU_NYN |
| Mark Gubicza | KCA | 3.01 | 198807030_BOS_KCA |
| Bob Knepper | HOU | 2.87 | 198807020_HOU_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.43 | 198807030_SLN_SDN |
| Mike Smithson | BOS | -3.1 | 198807030_BOS_KCA |
| Willie Fraser | ANA | -2.93 | 198807020_ANA_DET |
| Pete Smith | ATL | -2.26 | 198807040_PHI_ATL |
| Brian Fisher | PIT | -2.2 | 198807040_PIT_SDN |
Based on accumulated WAA for this season up to 1988-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.54 | Greg Maddux | 146.7 | CHN |
| +004+ | 5.09 | Roger Clemens | 151.7 | BOS |
| +005+ | 4.78 | Frank Viola | 132 | MIN |
| +006+ | 4.56 | John Tudor | 99.3 | SLN |
| +009+ | 4.16 | Orel Hershiser | 128 | LAN |
| +017+ | 3.61 | Ron Darling | 127 | NYN |
| +018+ | 3.58 | Pascual Perez | 75.3 | WAS |
| +019+ | 3.56 | David Cone | 107.3 | NYN |
| +020+ | 3.51 | Teddy Higuera | 106.7 | MIL |
| +023+ | 3.4 | Mark Gubicza | 130.7 | KCA |
| +025+ | 3.26 | Bob Knepper | 101.7 | HOU |
| +029+ | 3.03 | Bob Walk | 107.7 | PIT |
| +031+ | 2.84 | Dennis Martinez | 125 | WAS |
| +030+ | 2.84 | Kevin Gross | 128.3 | PHI |
| +032+ | 2.78 | Dwight Gooden | 136.7 | NYN |
| +035+ | 2.63 | Dave LaPoint | 116.3 | CHA |
| +036+ | 2.61 | John Candelaria | 108.3 | NYA |
| +039+ | 2.54 | John Smiley | 111.7 | PIT |
| +038+ | 2.54 | Doyle Alexander | 128.7 | DET |
| +044+ | 2.37 | Larry McWilliams | 93.3 | SLN |
| +046+ | 2.36 | Wes Gardner | 42.3 | BOS |
| +047+ | 2.33 | Dave Stieb | 110.7 | TOR |
| +053+ | 2.22 | Tim Leary | 106 | LAN |
| +055+ | 2.13 | Jim Deshaies | 98.3 | HOU |
| +057+ | 2.02 | Mike Scott | 109 | HOU |
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