| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 11.84 | 198805200_ANA_BOS |
| Dwight Gooden | NYN | 4.63 | 198805210_NYN_LAN |
| Bob Welch | OAK | 2.46 | 198805200_OAK_NYA |
| Danny Jackson | CIN | 1.91 | 198805210_CHN_CIN |
| Rick Reuschel | SFN | 1.68 | 198805210_WAS_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -2.84 | 198805190_NYN_SDN |
| Dan Petry | ANA | -2.23 | 198805192_ANA_BAL |
| Mike Boddicker | BAL | -1.79 | 198805191_ANA_BAL |
| Tom Glavine | ATL | -1.72 | 198805200_ATL_PIT |
| Al Nipper | CHN | -1.49 | 198805190_SLN_CHN |
Based on accumulated WAA for this season up to 1988-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.66 | Roger Clemens | 86 | BOS |
| +004+ | 3.65 | Chris Bosio | 82 | MIL |
| +005+ | 3.41 | Kevin Gross | 69.7 | PHI |
| +006+ | 3.28 | Bob Knepper | 50.3 | HOU |
| +007+ | 3.26 | Dave LaPoint | 66 | CHA |
| +010+ | 3.02 | Ron Darling | 70 | NYN |
| +012+ | 2.94 | Tom Candiotti | 70.3 | CLE |
| +013+ | 2.88 | Greg Swindell | 74.3 | CLE |
| +014+ | 2.75 | Greg Maddux | 75 | CHN |
| +017+ | 2.54 | Paul Kilgus | 68.3 | TEX |
| +020+ | 2.37 | Bob Walk | 53.7 | PIT |
| +021+ | 2.33 | Pascual Perez | 53 | WAS |
| +022+ | 2.27 | Larry McWilliams | 46.3 | SLN |
| +025+ | 2.15 | John Tudor | 32.7 | SLN |
| +028+ | 2.06 | Jim Deshaies | 46 | HOU |
| +029+ | 2 | Dave Stewart | 77.3 | OAK |
| +030+ | 1.99 | David Cone | 40.3 | NYN |
| +031+ | 1.97 | Dwight Gooden | 74.7 | NYN |
| +034+ | 1.93 | Teddy Higuera | 63 | MIL |
| +037+ | 1.87 | Doyle Alexander | 71 | DET |
| +039+ | 1.84 | Orel Hershiser | 61.7 | LAN |
| +041+ | 1.75 | John Candelaria | 60.7 | NYA |
| +043+ | 1.71 | Frank Viola | 65.3 | MIN |
| +044+ | 1.7 | Mike Scott | 68.7 | HOU |
| +048+ | 1.58 | Jose Guzman | 60 | TEX |
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