| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | MIN | 6.78 | 198807170_MIN_BAL |
| Pascual Perez | WAS | 4.9 | 198807190_HOU_WAS |
| Mike Scott | HOU | 3.55 | 198807190_HOU_WAS |
| Ron Darling | NYN | 2.19 | 198807190_NYN_CIN |
| Rick Reuschel | SFN | 1.74 | 198807190_SFN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -3.73 | 198807170_MIL_TEX |
| Mike Smithson | BOS | -3.18 | 198807190_MIN_BOS |
| Tom Glavine | ATL | -3.04 | 198807170_NYN_ATL |
| Steve Trout | SEA | -2.58 | 198807180_DET_SEA |
| Walt Terrell | DET | -1.5 | 198807180_DET_SEA |
Based on accumulated WAA for this season up to 1988-07-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.2 | Roger Clemens | 168.7 | BOS |
| +003+ | 6.17 | Greg Maddux | 164.7 | CHN |
| +004+ | 5.39 | Frank Viola | 146 | MIN |
| +013+ | 4.45 | Pascual Perez | 98.3 | WAS |
| +017+ | 4.14 | Mark Gubicza | 145.3 | KCA |
| +021+ | 3.88 | Dennis Martinez | 140.7 | WAS |
| +022+ | 3.83 | Orel Hershiser | 147.3 | LAN |
| +023+ | 3.71 | John Tudor | 108.3 | SLN |
| +024+ | 3.66 | David Cone | 122.7 | NYN |
| +026+ | 3.62 | Tim Leary | 125.7 | LAN |
| +027+ | 3.55 | Teddy Higuera | 119 | MIL |
| +028+ | 3.54 | Bob Walk | 128 | PIT |
| +033+ | 2.99 | Jose Rijo | 106.3 | CIN |
| +035+ | 2.84 | Jeff Robinson | 118.3 | DET |
| +037+ | 2.77 | John Smiley | 124 | PIT |
| +040+ | 2.62 | Jimmy Key | 48.3 | TOR |
| +041+ | 2.58 | Dwight Gooden | 148.7 | NYN |
| +042+ | 2.54 | Larry McWilliams | 99.7 | SLN |
| +043+ | 2.47 | Kevin Gross | 147.7 | PHI |
| +045+ | 2.4 | Danny Jackson | 135.7 | CIN |
| +046+ | 2.4 | Dave LaPoint | 132.7 | CHA |
| +047+ | 2.4 | Bob Knepper | 116 | HOU |
| +055+ | 2.32 | Jim Deshaies | 112.7 | HOU |
| +056+ | 2.28 | Dave Stieb | 124.7 | TOR |
| +059+ | 2.24 | Allan Anderson | 108.7 | MIN |
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