| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 10.72 | 197304110_OAK_CHA |
| Gaylord Perry | CLE | 4.43 | 197304110_CLE_NYA |
| Jim Palmer | BAL | 4.42 | 197304110_BAL_DET |
| Mickey Lolich | DET | 4.01 | 197304120_BAL_DET |
| Don Sutton | LAN | 3.59 | 197304110_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Reggie Cleveland | SLN | -4.24 | 197304110_NYN_SLN |
| Wayne Simpson | KCA | -4.18 | 197304120_TEX_KCA |
| Ron Reed | ATL | -2.79 | 197304130_ATL_LAN |
| Steve Arlin | SDN | -1.53 | 197304130_HOU_SDN |
| Jerry Koosman | NYN | -0.99 | 197304110_NYN_SLN |
Based on accumulated WAA for this season up to 1973-04-13.
| Rank | WAA | Name | IP | Tm |
|---|
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