| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 15.18 | 198807200_MIN_BOS |
| Orel Hershiser | LAN | 5.48 | 198807210_LAN_PIT |
| Ted Higuera | MIL | 5.15 | 198807200_KCA_MIL |
| Greg Maddux | CHN | 5.03 | 198807200_SFN_CHN |
| Pascual Perez | WAS | 4.9 | 198807190_HOU_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -4.35 | 198807200_TOR_ANA |
| Mike Smithson | BOS | -3.18 | 198807190_MIN_BOS |
| Ed Whitson | SDN | -1.81 | 198807210_SDN_CHN |
| Pete Smith | ATL | -1.62 | 198807200_ATL_PHI |
| Brian Fisher | PIT | -1.39 | 198807192_SDN_PIT |
Based on accumulated WAA for this season up to 1988-07-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.12 | Roger Clemens | 175 | BOS |
| +003+ | 5.56 | Greg Maddux | 169.7 | CHN |
| +004+ | 5.38 | Frank Viola | 146 | MIN |
| +012+ | 4.45 | Pascual Perez | 98.3 | WAS |
| +013+ | 4.44 | Mark Gubicza | 153.3 | KCA |
| +016+ | 4.3 | Teddy Higuera | 128 | MIL |
| +019+ | 4.09 | Dennis Martinez | 148 | WAS |
| +025+ | 3.78 | Orel Hershiser | 153.7 | LAN |
| +026+ | 3.74 | Bob Walk | 135 | PIT |
| +028+ | 3.65 | David Cone | 122.7 | NYN |
| +029+ | 3.64 | Tim Leary | 125.7 | LAN |
| +031+ | 3.07 | John Tudor | 113 | SLN |
| +034+ | 2.99 | Jose Rijo | 106.3 | CIN |
| +035+ | 2.83 | Jeff Robinson | 118.3 | DET |
| +038+ | 2.77 | John Smiley | 124 | PIT |
| +041+ | 2.6 | Larry McWilliams | 100.3 | SLN |
| +042+ | 2.58 | Dwight Gooden | 148.7 | NYN |
| +044+ | 2.49 | Kevin Gross | 147.7 | PHI |
| +047+ | 2.43 | Jim Deshaies | 118.7 | HOU |
| +048+ | 2.42 | Dave LaPoint | 132.7 | CHA |
| +049+ | 2.41 | Danny Jackson | 135.7 | CIN |
| +050+ | 2.4 | Bob Knepper | 116 | HOU |
| +057+ | 2.23 | Allan Anderson | 108.7 | MIN |
| +060+ | 2.18 | Jimmy Key | 52.7 | TOR |
| +059+ | 2.18 | Rick Reuschel | 126.3 | SFN |
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