| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.3 | 198805140_SEA_BOS |
| Ron Darling | NYN | 4.12 | 198805140_NYN_SFN |
| Ted Higuera | MIL | 4.12 | 198805130_CLE_MIL |
| Danny Jackson | CIN | 2.14 | 198805150_CIN_PIT |
| Jack Morris | DET | 2.1 | 198805150_MIN_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.13 | 198805140_WAS_SDN |
| Dan Petry | ANA | -1.88 | 198805140_ANA_NYA |
| Jamie Moyer | CHN | -1.84 | 198805130_CHN_HOU |
| Jerry Reuss | CHA | -1.72 | 198805150_TOR_CHA |
| Mike Boddicker | BAL | -1.52 | 198805140_OAK_BAL |
Based on accumulated WAA for this season up to 1988-05-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.68 | Roger Clemens | 76 | BOS |
| +004+ | 2.98 | Ron Darling | 62 | NYN |
| +006+ | 2.89 | Chris Bosio | 66 | MIL |
| +008+ | 2.83 | Bob Knepper | 42.3 | HOU |
| +007+ | 2.83 | Kevin Gross | 60.7 | PHI |
| +009+ | 2.67 | Bob Walk | 47.7 | PIT |
| +014+ | 2.55 | Dave LaPoint | 58 | CHA |
| +015+ | 2.49 | Greg Maddux | 64.3 | CHN |
| +016+ | 2.39 | Paul Kilgus | 53.7 | TEX |
| +017+ | 2.37 | Tom Candiotti | 61.3 | CLE |
| +018+ | 2.32 | Pascual Perez | 53 | WAS |
| +022+ | 2.1 | Greg Swindell | 65.3 | CLE |
| +024+ | 2.01 | Larry McWilliams | 40.3 | SLN |
| +027+ | 1.89 | Dave Stewart | 71.3 | OAK |
| +029+ | 1.85 | Teddy Higuera | 54.7 | MIL |
| +032+ | 1.74 | Frank Viola | 65.3 | MIN |
| +033+ | 1.74 | Danny Jackson | 58.3 | CIN |
| +038+ | 1.61 | Jose Guzman | 52 | TEX |
| +036+ | 1.61 | Jim Deshaies | 38 | HOU |
| +040+ | 1.56 | Mike Scott | 61.7 | HOU |
| +041+ | 1.5 | John Farrell | 61 | CLE |
| +047+ | 1.46 | Orel Hershiser | 54.7 | LAN |
| +049+ | 1.45 | Dwight Gooden | 59 | NYN |
| +051+ | 1.43 | Fernando Valenzuela | 54.3 | LAN |
| +052+ | 1.41 | John Tudor | 23.7 | SLN |
_