| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.78 | 198804190_BOS_DET |
| Jack Morris | DET | 5.84 | 198804190_BOS_DET |
| Ted Higuera | MIL | 4.09 | 198804170_NYA_MIL |
| Nolan Ryan | HOU | 3.31 | 198804170_CIN_HOU |
| Bob Ojeda | NYN | 2.82 | 198804190_PHI_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Nieves | MIL | -5.31 | 198804190_BAL_MIL |
| Jerry Reuss | CHA | -4.37 | 198804190_CHA_SEA |
| Bobby Witt | TEX | -3.3 | 198804180_TEX_BOS |
| Jamie Moyer | CHN | -3.04 | 198804190_WAS_CHN |
| Joe Niekro | MIN | -2.45 | 198804190_NYA_MIN |
Based on accumulated WAA for this season up to 1988-04-19.
| Rank | WAA | Name | IP | Tm |
|---|
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