| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 16.73 | 198806080_BOS_NYA |
| Mike Scott | HOU | 6.2 | 198806080_HOU_LAN |
| Ted Higuera | MIL | 5.64 | 198806100_MIL_CHA |
| Ron Darling | NYN | 4.75 | 198806100_NYN_WAS |
| Orel Hershiser | LAN | 4.48 | 198806090_HOU_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rich Yett | CLE | -3.09 | 198806080_TOR_CLE |
| Dan Petry | ANA | -2.25 | 198806100_KCA_ANA |
| Mike Campbell | SEA | -1.69 | 198806080_MIL_SEA |
| Jeff Sellers | BOS | -1.62 | 198806100_BOS_TOR |
| Tom Glavine | ATL | -1.47 | 198806100_ATL_HOU |
Based on accumulated WAA for this season up to 1988-06-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.65 | Roger Clemens | 118.7 | BOS |
| +005+ | 3.73 | John Tudor | 61.3 | SLN |
| +006+ | 3.69 | Teddy Higuera | 89.3 | MIL |
| +007+ | 3.62 | Bob Knepper | 68.3 | HOU |
| +008+ | 3.41 | Greg Maddux | 104.7 | CHN |
| +009+ | 3.33 | Greg Swindell | 105.3 | CLE |
| +013+ | 3.05 | David Cone | 69.7 | NYN |
| +014+ | 2.99 | Ron Darling | 97.3 | NYN |
| +015+ | 2.98 | Larry McWilliams | 67.3 | SLN |
| +017+ | 2.88 | Orel Hershiser | 95.3 | LAN |
| +020+ | 2.67 | Frank Viola | 95 | MIN |
| +022+ | 2.52 | Kevin Gross | 97 | PHI |
| +027+ | 2.43 | Dennis Martinez | 90.7 | WAS |
| +030+ | 2.3 | Pascual Perez | 53 | WAS |
| +031+ | 2.29 | Rick Reuschel | 86.7 | SFN |
| +035+ | 2.27 | Dave Stieb | 86 | TOR |
| +034+ | 2.27 | John Candelaria | 74.7 | NYA |
| +037+ | 2.18 | Dave LaPoint | 89 | CHA |
| +039+ | 2.13 | Chris Bosio | 95.3 | MIL |
| +045+ | 2.01 | Bob Walk | 77.7 | PIT |
| +046+ | 1.96 | Tom Candiotti | 101.7 | CLE |
| +049+ | 1.92 | Jeff Russell | 54 | TEX |
| +047+ | 1.92 | Jose Rijo | 54 | CIN |
| +051+ | 1.87 | John Farrell | 91.3 | CLE |
| +055+ | 1.79 | Jose Guzman | 92.3 | TEX |
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