| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 9.17 | 197307171_CHA_BOS |
| Bert Blyleven | MIN | 8.4 | 197307150_CLE_MIN |
| Don Sutton | LAN | 6.48 | 197307160_LAN_PIT |
| Dave McNally | BAL | 4.37 | 197307170_BAL_OAK |
| Rick Reuschel | CHN | 3.03 | 197307150_CHN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Lonborg | PHI | -3.13 | 197307170_PHI_CIN |
| Milt Wilcox | CLE | -2.93 | 197307160_CLE_ANA |
| Johnny Odom | OAK | -1.82 | 197307150_OAK_MIL |
| Steve Arlin | SDN | -1.36 | 197307170_SDN_CHN |
| Mike Torrez | WAS | -0.84 | 197307150_WAS_ATL |
Based on accumulated WAA for this season up to 1973-07-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.74 | Ken Holtzman | 180.7 | OAK |
| +004+ | 5.74 | Tom Seaver | 151.7 | NYN |
| +006+ | 5.7 | Wilbur Wood | 243.3 | CHA |
| +007+ | 5.6 | Don Sutton | 175 | LAN |
| +008+ | 5.5 | Bert Blyleven | 185.3 | MIN |
| +010+ | 4.86 | Wayne Twitchell | 131 | PHI |
| +012+ | 4.67 | Bill Lee | 154 | BOS |
| +011+ | 4.67 | Bill Singer | 184.3 | ANA |
| +016+ | 4.38 | Rollie Fingers | 77.7 | OAK |
| +018+ | 4.24 | Rick Reuschel | 147 | CHN |
| +019+ | 4.16 | Dave McNally | 164.3 | BAL |
| +022+ | 3.62 | Ross Grimsley | 141.3 | CIN |
| +023+ | 3.6 | Nolan Ryan | 189 | ANA |
| +028+ | 3.18 | Mel Stottlemyre | 159.3 | NYA |
| +032+ | 3.05 | Sonny Siebert | 79.3 | TOT |
| +034+ | 3.02 | Nelson Briles | 136 | PIT |
| +033+ | 3.02 | Fred Beene | 62.7 | NYA |
| +045+ | 2.7 | Dave Roberts | 138 | HOU |
| +047+ | 2.68 | Steve Renko | 130 | WAS |
| +049+ | 2.64 | Jim Colborn | 165.7 | MIL |
| +052+ | 2.57 | Rick Wise | 148 | SLN |
| +053+ | 2.55 | Stan Bahnsen | 169.7 | CHA |
| +059+ | 2.45 | Jim Palmer | 151.7 | BAL |
| +060+ | 2.44 | Bob Gibson | 161 | SLN |
| +063+ | 2.33 | Ken Brett | 97 | PHI |
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