| Starter | Tm | Tier | Game |
|---|---|---|---|
| Orel Hershiser | LAN | 6.57 | 199004140_LAN_HOU |
| Joe Magrane | SLN | 4.22 | 199004140_SLN_PHI |
| Roger Clemens | BOS | 2.88 | 199004140_MIL_BOS |
| Doug Drabek | PIT | 2.49 | 199004140_CHN_PIT |
| Dennis Martinez | WAS | 2.2 | 199004140_NYN_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Morris | DET | -2.96 | 199004130_BAL_DET |
| Bobby Witt | TEX | -2.59 | 199004130_TEX_NYA |
| Todd Stottlemyre | TOR | -2.52 | 199004140_TOR_KCA |
| Bruce Ruffin | PHI | -2.4 | 199004140_SLN_PHI |
| Melido Perez | CHA | -2.17 | 199004140_CLE_CHA |
Based on accumulated WAA for this season up to 1990-04-14.
| Rank | WAA | Name | IP | Tm |
|---|
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