| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 12.29 | 198805250_BOS_SEA |
| Dwight Gooden | NYN | 5.97 | 198805260_SFN_NYN |
| Bob Welch | OAK | 2.47 | 198805250_BAL_OAK |
| Bob Knepper | HOU | 1.85 | 198805250_HOU_PIT |
| Rick Reuschel | SFN | 1.65 | 198805260_SFN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Nieves | MIL | -3.38 | 198805250_MIL_DET |
| Dan Petry | ANA | -3.23 | 198805250_NYA_ANA |
| Ed Whitson | SDN | -3.07 | 198805250_SDN_WAS |
| Tom Glavine | ATL | -3.04 | 198805250_ATL_CHN |
| Scott Bailes | CLE | -1.01 | 198805270_MIL_CLE |
Based on accumulated WAA for this season up to 1988-05-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.5 | Roger Clemens | 95 | BOS |
| +004+ | 3.55 | Chris Bosio | 90 | MIL |
| +005+ | 3.31 | Greg Maddux | 89 | CHN |
| +006+ | 3.3 | Kevin Gross | 83.3 | PHI |
| +007+ | 3.2 | Bob Knepper | 56.3 | HOU |
| +010+ | 3.17 | Greg Swindell | 82.7 | CLE |
| +011+ | 3.02 | Larry McWilliams | 55.3 | SLN |
| +012+ | 3.01 | Ron Darling | 77.3 | NYN |
| +013+ | 3 | Tom Candiotti | 78.3 | CLE |
| +014+ | 2.95 | Dave LaPoint | 72 | CHA |
| +019+ | 2.53 | John Tudor | 39.7 | SLN |
| +020+ | 2.52 | Jim Deshaies | 53.3 | HOU |
| +021+ | 2.52 | John Candelaria | 69.7 | NYA |
| +022+ | 2.44 | Mike Scott | 76.7 | HOU |
| +024+ | 2.42 | Frank Viola | 80.7 | MIN |
| +025+ | 2.42 | Paul Kilgus | 74.3 | TEX |
| +028+ | 2.31 | David Cone | 46.3 | NYN |
| +029+ | 2.3 | Jose Guzman | 77.7 | TEX |
| +031+ | 2.28 | Orel Hershiser | 69.7 | LAN |
| +030+ | 2.28 | Pascual Perez | 53 | WAS |
| +047+ | 1.84 | Dennis Martinez | 69.7 | WAS |
| +048+ | 1.82 | Teddy Higuera | 64 | MIL |
| +051+ | 1.71 | Tim Leary | 58.3 | LAN |
| +052+ | 1.71 | John Farrell | 78 | CLE |
| +059+ | 1.46 | Dwight Gooden | 81 | NYN |
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