| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.8 | 198807040_BOS_KCA |
| John Tudor | SLN | 7.59 | 198807040_SLN_LAN |
| Orel Hershiser | LAN | 6.96 | 198807050_SLN_LAN |
| Mark Gubicza | KCA | 3.01 | 198807030_BOS_KCA |
| Charlie Hough | TEX | 2.87 | 198807040_NYA_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.43 | 198807030_SLN_SDN |
| Tom Glavine | ATL | -3.18 | 198807050_PHI_ATL |
| Mike Smithson | BOS | -3.1 | 198807030_BOS_KCA |
| Steve Trout | SEA | -2.71 | 198807050_SEA_DET |
| Brian Fisher | PIT | -2.2 | 198807040_PIT_SDN |
Based on accumulated WAA for this season up to 1988-07-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.54 | Greg Maddux | 146.7 | CHN |
| +004+ | 5.09 | Roger Clemens | 151.7 | BOS |
| +005+ | 4.75 | Frank Viola | 132 | MIN |
| +007+ | 4.56 | John Tudor | 99.3 | SLN |
| +009+ | 4.13 | Orel Hershiser | 135 | LAN |
| +017+ | 3.59 | Ron Darling | 127 | NYN |
| +018+ | 3.55 | Pascual Perez | 75.3 | WAS |
| +019+ | 3.54 | David Cone | 107.3 | NYN |
| +020+ | 3.5 | Teddy Higuera | 106.7 | MIL |
| +023+ | 3.38 | Mark Gubicza | 130.7 | KCA |
| +026+ | 3.33 | Bob Walk | 116 | PIT |
| +027+ | 3.22 | Bob Knepper | 101.7 | HOU |
| +030+ | 2.84 | Kevin Gross | 128.3 | PHI |
| +031+ | 2.79 | Dennis Martinez | 125 | WAS |
| +032+ | 2.76 | Dwight Gooden | 136.7 | NYN |
| +036+ | 2.59 | John Candelaria | 108.3 | NYA |
| +037+ | 2.54 | Larry McWilliams | 95.3 | SLN |
| +038+ | 2.53 | John Smiley | 111.7 | PIT |
| +040+ | 2.52 | Doyle Alexander | 128.7 | DET |
| +047+ | 2.31 | Dave Stieb | 110.7 | TOR |
| +048+ | 2.29 | Wes Gardner | 48.7 | BOS |
| +052+ | 2.24 | Dave LaPoint | 121.7 | CHA |
| +055+ | 2.2 | Tim Leary | 106 | LAN |
| +057+ | 2.09 | Jim Deshaies | 98.3 | HOU |
| +061+ | 1.98 | Mike Scott | 109 | HOU |
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