| Starter | Tm | Tier | Game |
|---|---|---|---|
| Orel Hershiser | LAN | 9.98 | 198904210_SFN_LAN |
| Dwight Gooden | NYN | 4.32 | 198904200_CHN_NYN |
| Mike Scott | HOU | 4 | 198904200_HOU_ATL |
| Mark Gubicza | KCA | 3.66 | 198904220_KCA_BOS |
| Bob Welch | OAK | 3.28 | 198904210_ANA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Oil Can Boyd | BOS | -5.24 | 198904200_BOS_CLE |
| Mike Campbell | SEA | -4.58 | 198904210_SEA_CHA |
| Rich Yett | CLE | -2.92 | 198904200_BOS_CLE |
| Jeff Ballard | BAL | -2.12 | 198904200_KCA_BAL |
| Neal Heaton | PIT | -1.82 | 198904220_PHI_PIT |
Based on accumulated WAA for this season up to 1989-04-22.
| Rank | WAA | Name | IP | Tm |
|---|
_