| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.08 | 198807250_BOS_TEX |
| Frank Viola | MIN | 7.77 | 198807270_TOR_MIN |
| Ted Higuera | MIL | 5.92 | 198807250_MIL_NYA |
| Orel Hershiser | LAN | 4.43 | 198807261_LAN_SFN |
| Dwight Gooden | NYN | 4.29 | 198807270_NYN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Glavine | ATL | -3.04 | 198807270_CIN_ATL |
| Jim Clancy | TOR | -2.4 | 198807260_TOR_MIN |
| Oil Can Boyd | BOS | -1.84 | 198807260_BOS_TEX |
| Mike Moore | SEA | -1.73 | 198807250_SEA_CHA |
| Ed Whitson | SDN | -1.02 | 198807270_HOU_SDN |
Based on accumulated WAA for this season up to 1988-07-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.9 | Roger Clemens | 184 | BOS |
| +004+ | 5.77 | Frank Viola | 160 | MIN |
| +005+ | 5.46 | Greg Maddux | 176.7 | CHN |
| +012+ | 4.74 | Pascual Perez | 104.3 | WAS |
| +016+ | 4.56 | Tim Leary | 143.7 | LAN |
| +017+ | 4.46 | Mark Gubicza | 161 | KCA |
| +020+ | 4.4 | Teddy Higuera | 136 | MIL |
| +021+ | 4.3 | Dennis Martinez | 155.7 | WAS |
| +023+ | 4.13 | David Cone | 135.3 | NYN |
| +026+ | 3.97 | Orel Hershiser | 161 | LAN |
| +027+ | 3.74 | Bob Walk | 140 | PIT |
| +029+ | 3.6 | John Tudor | 122 | SLN |
| +030+ | 3.6 | Danny Jackson | 152 | CIN |
| +032+ | 3.47 | Dwight Gooden | 166 | NYN |
| +033+ | 3.46 | Jose Rijo | 114.3 | CIN |
| +037+ | 2.9 | Rick Reuschel | 135.3 | SFN |
| +045+ | 2.71 | Jeff Robinson | 126.3 | DET |
| +048+ | 2.59 | Allan Anderson | 115.3 | MIN |
| +049+ | 2.5 | Joe Magrane | 80 | SLN |
| +050+ | 2.47 | Charlie Hough | 165.3 | TEX |
| +054+ | 2.34 | John Smiley | 131.3 | PIT |
| +058+ | 2.29 | Jimmy Key | 58.7 | TOR |
| +056+ | 2.29 | Bob Knepper | 122 | HOU |
| +061+ | 2.25 | Kevin Gross | 154.7 | PHI |
| +062+ | 2.24 | Larry McWilliams | 101.3 | SLN |
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