| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mickey Lolich | DET | 6.34 | 197304160_DET_BOS |
| Jim Palmer | BAL | 6.25 | 197304151_BAL_MIL |
| Gaylord Perry | CLE | 5.22 | 197304150_CLE_DET |
| Tom Seaver | NYN | 4.1 | 197304170_CHN_NYN |
| Don Sutton | LAN | 3.79 | 197304160_HOU_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Reggie Cleveland | SLN | -4.97 | 197304150_CHN_SLN |
| Wayne Simpson | KCA | -4.61 | 197304170_OAK_KCA |
| Ron Reed | ATL | -3.48 | 197304172_ATL_SFN |
| Bill Singer | ANA | -1.73 | 197304170_ANA_MIN |
| Bill Greif | SDN | -1.73 | 197304152_HOU_SDN |
Based on accumulated WAA for this season up to 1973-04-17.
| Rank | WAA | Name | IP | Tm |
|---|
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