| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 15.36 | 198806040_TOR_BOS |
| Mike Scott | HOU | 6.38 | 198806030_HOU_SFN |
| Orel Hershiser | LAN | 4.87 | 198806040_CIN_LAN |
| Ron Darling | NYN | 4.31 | 198806040_CHN_NYN |
| Ted Higuera | MIL | 4.25 | 198806040_ANA_MIL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rich Yett | CLE | -3 | 198806030_CLE_DET |
| Dan Petry | ANA | -2.95 | 198806040_ANA_MIL |
| Mike Campbell | SEA | -1.65 | 198806030_SEA_KCA |
| Jamie Moyer | CHN | -1.29 | 198806030_CHN_NYN |
| Oil Can Boyd | BOS | -0.94 | 198806030_TOR_BOS |
Based on accumulated WAA for this season up to 1988-06-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.37 | Roger Clemens | 111 | BOS |
| +005+ | 3.61 | Greg Swindell | 89.7 | CLE |
| +006+ | 3.53 | Bob Knepper | 62.3 | HOU |
| +007+ | 3.43 | David Cone | 64.7 | NYN |
| +008+ | 3.42 | Ron Darling | 93 | NYN |
| +009+ | 3.38 | John Tudor | 55 | SLN |
| +010+ | 3.36 | Greg Maddux | 97.3 | CHN |
| +011+ | 3.1 | Teddy Higuera | 80 | MIL |
| +012+ | 3.04 | Frank Viola | 89.7 | MIN |
| +018+ | 2.7 | Kevin Gross | 89.3 | PHI |
| +019+ | 2.69 | Chris Bosio | 91.7 | MIL |
| +022+ | 2.6 | Orel Hershiser | 87.3 | LAN |
| +025+ | 2.58 | Larry McWilliams | 60.3 | SLN |
| +027+ | 2.39 | Jim Deshaies | 61.3 | HOU |
| +031+ | 2.31 | Pascual Perez | 53 | WAS |
| +029+ | 2.31 | Dave LaPoint | 80.7 | CHA |
| +033+ | 2.27 | John Candelaria | 74.7 | NYA |
| +038+ | 2.13 | Dave Stieb | 75.3 | TOR |
| +039+ | 2.05 | Tom Candiotti | 93.3 | CLE |
| +042+ | 1.96 | Dennis Martinez | 82.7 | WAS |
| +043+ | 1.93 | Paul Kilgus | 77.3 | TEX |
| +047+ | 1.83 | Tom Filer | 24.7 | MIL |
| +054+ | 1.7 | John Farrell | 84.7 | CLE |
| +061+ | 1.61 | Tim Leary | 64 | LAN |
| +068+ | 1.53 | Mike Scott | 87.7 | HOU |
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