| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 11.84 | 198805200_ANA_BOS |
| Ted Higuera | MIL | 4.08 | 198805180_DET_MIL |
| Ron Darling | NYN | 3.97 | 198805190_NYN_SDN |
| Orel Hershiser | LAN | 2.94 | 198805180_WAS_LAN |
| Bob Welch | OAK | 2.46 | 198805200_OAK_NYA |
| 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 |
| Jamie Moyer | CHN | -1.59 | 198805180_SLN_CHN |
Based on accumulated WAA for this season up to 1988-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.68 | Roger Clemens | 86 | BOS |
| +004+ | 3.42 | Kevin Gross | 69.7 | PHI |
| +005+ | 3.3 | Bob Knepper | 50.3 | HOU |
| +006+ | 3.28 | Chris Bosio | 73 | MIL |
| +007+ | 3.27 | Dave LaPoint | 66 | CHA |
| +009+ | 3.04 | Ron Darling | 70 | NYN |
| +010+ | 2.95 | Tom Candiotti | 70.3 | CLE |
| +011+ | 2.89 | Greg Swindell | 74.3 | CLE |
| +013+ | 2.76 | Greg Maddux | 75 | CHN |
| +019+ | 2.38 | Bob Walk | 53.7 | PIT |
| +020+ | 2.34 | Pascual Perez | 53 | WAS |
| +022+ | 2.29 | Larry McWilliams | 46.3 | SLN |
| +024+ | 2.17 | John Tudor | 32.7 | SLN |
| +027+ | 2.09 | Jim Deshaies | 46 | HOU |
| +029+ | 2 | David Cone | 40.3 | NYN |
| +030+ | 2 | Dave Stewart | 77.3 | OAK |
| +031+ | 1.95 | Teddy Higuera | 63 | MIL |
| +033+ | 1.89 | Doyle Alexander | 71 | DET |
| +034+ | 1.85 | Orel Hershiser | 61.7 | LAN |
| +036+ | 1.77 | Paul Kilgus | 59.7 | TEX |
| +037+ | 1.76 | John Candelaria | 60.7 | NYA |
| +038+ | 1.75 | Danny Jackson | 58.3 | CIN |
| +040+ | 1.74 | Mike Scott | 68.7 | HOU |
| +042+ | 1.7 | Frank Viola | 65.3 | MIN |
| +049+ | 1.59 | Jose Guzman | 60 | TEX |
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