| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.95 | 198804290_MIN_BOS |
| Ron Darling | NYN | 4.75 | 198804270_NYN_ATL |
| Orel Hershiser | LAN | 4.09 | 198804290_SLN_LAN |
| Nolan Ryan | HOU | 3.49 | 198804270_PHI_HOU |
| Jack Morris | DET | 2.43 | 198804290_SEA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Nieves | MIL | -6.52 | 198804270_MIL_TEX |
| Scott McGregor | BAL | -5.73 | 198804270_BAL_MIN |
| Steve Trout | SEA | -3.31 | 198804270_SEA_CLE |
| Jamie Moyer | CHN | -3.19 | 198804270_CHN_LAN |
| Joe Niekro | MIN | -2.84 | 198804290_MIN_BOS |
Based on accumulated WAA for this season up to 1988-04-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.46 | Dave LaPoint | 38.3 | CHA |
| +003+ | 2.41 | Roger Clemens | 51.3 | BOS |
| +004+ | 2.33 | Ron Darling | 39 | NYN |
| +006+ | 2.21 | Kevin Gross | 38.3 | PHI |
| +007+ | 2.13 | Charlie Hough | 49.3 | TEX |
| +008+ | 2.12 | Orel Hershiser | 40.3 | LAN |
| +011+ | 1.83 | Jose Guzman | 32 | TEX |
| +012+ | 1.82 | Pascual Perez | 38 | WAS |
| +015+ | 1.68 | Mike Scott | 41.7 | HOU |
| +016+ | 1.67 | Chris Bosio | 41 | MIL |
| +017+ | 1.62 | Tom Candiotti | 42 | CLE |
| +020+ | 1.56 | Greg Maddux | 41 | CHN |
| +024+ | 1.27 | Brian Fisher | 29.3 | PIT |
| +025+ | 1.26 | Greg Swindell | 42.7 | CLE |
| XXXXX | 1.24 | John Farrell | 37.7 | CLE |
| XXXXX | 1.21 | Bob Knepper | 19 | HOU |
| XXXXX | 1.2 | Bob Walk | 26 | PIT |
| XXXXX | 1.18 | Rick Reuschel | 28.3 | SFN |
| XXXXX | 1.1 | Dennis Martinez | 39.3 | WAS |
| XXXXX | 0.97 | Mark Gubicza | 34 | KCA |
| XXXXX | 0.92 | Dwight Gooden | 35 | NYN |
| XXXXX | 0.9 | Teddy Higuera | 30.3 | MIL |
| XXXXX | 0.89 | Nolan Ryan | 37.3 | HOU |
| XXXXX | 0.88 | Jimmy Jones | 25.7 | SDN |
| XXXXX | 0.84 | Dave Stewart | 48.3 | OAK |
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