| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ted Higuera | MIL | 6.94 | 198806260_MIL_ANA |
| Ron Darling | NYN | 4.89 | 198806260_NYN_CHN |
| Frank Viola | MIN | 4.55 | 198806262_MIN_OAK |
| Pascual Perez | WAS | 2.81 | 198806260_PIT_WAS |
| Rick Reuschel | SFN | 2.64 | 198806270_SFN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Smithson | BOS | -4.41 | 198806260_BAL_BOS |
| Willie Fraser | ANA | -3.38 | 198806260_MIL_ANA |
| Tom Glavine | ATL | -2.36 | 198806250_SDN_ATL |
| Dennis Rasmussen | SDN | -0.82 | 198806270_SDN_CIN |
| Charlie Lea | MIN | -0.74 | 198806261_MIN_OAK |
Based on accumulated WAA for this season up to 1988-06-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.03 | John Tudor | 83.3 | SLN |
| +004+ | 4.94 | Greg Maddux | 130.7 | CHN |
| +005+ | 4.45 | David Cone | 95.3 | NYN |
| +006+ | 4.44 | Frank Viola | 124 | MIN |
| +007+ | 4.31 | Roger Clemens | 136.7 | BOS |
| +011+ | 3.75 | Bob Knepper | 88.3 | HOU |
| +013+ | 3.7 | Pascual Perez | 69 | WAS |
| +015+ | 3.5 | Teddy Higuera | 106.7 | MIL |
| +016+ | 3.49 | Bob Walk | 103.3 | PIT |
| +017+ | 3.45 | Ron Darling | 119.7 | NYN |
| +018+ | 3.33 | Orel Hershiser | 119 | LAN |
| +020+ | 3.2 | Mark Gubicza | 123.7 | KCA |
| +030+ | 2.71 | Kevin Gross | 120.3 | PHI |
| +031+ | 2.71 | Dave LaPoint | 110.3 | CHA |
| +036+ | 2.6 | Jim Deshaies | 92 | HOU |
| +039+ | 2.43 | Larry McWilliams | 87.3 | SLN |
| +041+ | 2.31 | Dennis Martinez | 111 | WAS |
| +043+ | 2.26 | John Smiley | 103.7 | PIT |
| +044+ | 2.24 | Chris Bosio | 125.3 | MIL |
| +047+ | 2.06 | Dwight Gooden | 127.7 | NYN |
| +048+ | 2.01 | Dave Stieb | 101.7 | TOR |
| +049+ | 1.99 | Mike Scott | 109 | HOU |
| +055+ | 1.9 | Doyle Alexander | 121.7 | DET |
| +057+ | 1.86 | Paul Kilgus | 111 | TEX |
| +059+ | 1.83 | Scott Bankhead | 54.3 | SEA |
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