| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 13.76 | 197304221_CHA_KCA |
| Gaylord Perry | CLE | 7.68 | 197304200_BOS_CLE |
| Mickey Lolich | DET | 6.14 | 197304200_DET_BAL |
| Tom Seaver | NYN | 5.52 | 197304221_WAS_NYN |
| Don Sutton | LAN | 5.33 | 197304210_SFN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Reggie Cleveland | SLN | -5.18 | 197304221_SLN_PHI |
| Jerry Reuss | HOU | -3.43 | 197304220_SDN_HOU |
| Ron Reed | ATL | -3.13 | 197304220_ATL_CIN |
| Pete Broberg | TEX | -2.85 | 197304210_TEX_MIN |
| Rich Gossage | CHA | -2.06 | 197304222_CHA_KCA |
Based on accumulated WAA for this season up to 1973-04-22.
| Rank | WAA | Name | IP | Tm |
|---|
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