| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 8.27 | 198805090_BOS_KCA |
| Ted Higuera | MIL | 3.8 | 198805080_MIL_KCA |
| Ron Darling | NYN | 3.45 | 198805080_CIN_NYN |
| Rick Reuschel | SFN | 2.35 | 198805070_SFN_CHN |
| Nolan Ryan | HOU | 2.19 | 198805070_HOU_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Nieves | MIL | -4.02 | 198805070_MIL_KCA |
| Mike Morgan | BAL | -2.79 | 198805070_CHA_BAL |
| Jerry Reuss | CHA | -2.53 | 198805090_CHA_BAL |
| Dan Petry | ANA | -2.38 | 198805090_CLE_ANA |
| Ed Whitson | SDN | -2.11 | 198805090_SDN_SLN |
Based on accumulated WAA for this season up to 1988-05-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.92 | Ron Darling | 55 | NYN |
| +004+ | 2.82 | Roger Clemens | 67 | BOS |
| +005+ | 2.51 | Larry McWilliams | 32.3 | SLN |
| +007+ | 2.37 | Bob Knepper | 35 | HOU |
| +008+ | 2.31 | Dave LaPoint | 51 | CHA |
| +009+ | 2.29 | Kevin Gross | 52.7 | PHI |
| +010+ | 2.28 | Orel Hershiser | 46.7 | LAN |
| +011+ | 2.23 | Bob Walk | 40 | PIT |
| +013+ | 2.21 | Pascual Perez | 53 | WAS |
| +014+ | 2.11 | Chris Bosio | 58 | MIL |
| +015+ | 2.11 | Dwight Gooden | 53 | NYN |
| +017+ | 2.07 | Greg Swindell | 57.7 | CLE |
| +016+ | 2.07 | Mike Scott | 56 | HOU |
| +018+ | 2.01 | Rick Reuschel | 42.7 | SFN |
| +021+ | 1.96 | Dave Stewart | 63.3 | OAK |
| +024+ | 1.9 | Danny Jackson | 53 | CIN |
| +027+ | 1.8 | Tom Candiotti | 52.3 | CLE |
| +028+ | 1.74 | Teddy Higuera | 47 | MIL |
| +029+ | 1.74 | John Farrell | 54 | CLE |
| +030+ | 1.72 | Charlie Hough | 53.3 | TEX |
| +031+ | 1.65 | Greg Maddux | 54.3 | CHN |
| +034+ | 1.6 | John Tudor | 20 | SLN |
| +037+ | 1.56 | Paul Kilgus | 44.7 | TEX |
| +038+ | 1.51 | Frank Viola | 51.7 | MIN |
| +045+ | 1.35 | Bill Wegman | 45 | MIL |
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