| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 10.4 | 197304180_TEX_CHA |
| Jim Palmer | BAL | 7.32 | 197304190_NYA_BAL |
| Tom Seaver | NYN | 4.1 | 197304170_CHN_NYN |
| Bert Blyleven | MIN | 3.62 | 197304180_ANA_MIN |
| Don Wilson | HOU | 2.73 | 197304170_HOU_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wayne Simpson | KCA | -4.61 | 197304170_OAK_KCA |
| Jerry Reuss | HOU | -4.38 | 197304180_HOU_LAN |
| Carl Morton | ATL | -4.31 | 197304180_ATL_SFN |
| Steve Renko | WAS | -2.69 | 197304180_PHI_WAS |
| Steve Arlin | SDN | -1.77 | 197304180_CIN_SDN |
Based on accumulated WAA for this season up to 1973-04-19.
| Rank | WAA | Name | IP | Tm |
|---|
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