| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.3 | 198805140_SEA_BOS |
| Dwight Gooden | NYN | 5.44 | 198805160_NYN_SDN |
| Danny Jackson | CIN | 2.14 | 198805150_CIN_PIT |
| Jack Morris | DET | 2.1 | 198805150_MIN_DET |
| Bob Walk | PIT | 1.96 | 198805160_PIT_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.13 | 198805140_WAS_SDN |
| Mike Moore | SEA | -2.94 | 198805160_SEA_NYA |
| Dan Petry | ANA | -1.88 | 198805140_ANA_NYA |
| Jerry Reuss | CHA | -1.72 | 198805150_TOR_CHA |
| Al Nipper | CHN | -1.68 | 198805140_CHN_HOU |
Based on accumulated WAA for this season up to 1988-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.66 | Roger Clemens | 76 | BOS |
| +004+ | 3.3 | Chris Bosio | 73 | MIL |
| +005+ | 2.96 | Ron Darling | 62 | NYN |
| +009+ | 2.82 | Bob Knepper | 42.3 | HOU |
| +008+ | 2.82 | Kevin Gross | 60.7 | PHI |
| +013+ | 2.53 | Dave LaPoint | 58 | CHA |
| +014+ | 2.47 | Greg Maddux | 64.3 | CHN |
| +016+ | 2.36 | Bob Walk | 53.7 | PIT |
| +017+ | 2.35 | Tom Candiotti | 61.3 | CLE |
| +018+ | 2.31 | Pascual Perez | 53 | WAS |
| +021+ | 2.08 | Jim Deshaies | 46 | HOU |
| +022+ | 2.08 | Greg Swindell | 65.3 | CLE |
| +023+ | 2 | Larry McWilliams | 40.3 | SLN |
| +028+ | 1.87 | Dave Stewart | 71.3 | OAK |
| +029+ | 1.86 | Paul Kilgus | 59.7 | TEX |
| +031+ | 1.83 | Teddy Higuera | 54.7 | MIL |
| +033+ | 1.77 | John Candelaria | 60.7 | NYA |
| +034+ | 1.73 | Danny Jackson | 58.3 | CIN |
| +035+ | 1.72 | Frank Viola | 65.3 | MIN |
| +039+ | 1.59 | Jose Guzman | 52 | TEX |
| +041+ | 1.55 | Mike Scott | 61.7 | HOU |
| +045+ | 1.48 | John Farrell | 61 | CLE |
| +049+ | 1.44 | Orel Hershiser | 54.7 | LAN |
| +052+ | 1.41 | John Tudor | 23.7 | SLN |
| +051+ | 1.41 | Fernando Valenzuela | 54.3 | LAN |
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