| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 9.41 | 197307220_NYN_HOU |
| Don Sutton | LAN | 7.2 | 197307210_LAN_SLN |
| Ken Holtzman | OAK | 5.82 | 197307262_OAK_MIN |
| Wilbur Wood | CHA | 5.02 | 197307261_CHA_KCA |
| Dave McNally | BAL | 4.7 | 197307261_CLE_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Milt Wilcox | CLE | -3.09 | 197307210_CLE_OAK |
| Jim Lonborg | PHI | -2.33 | 197307222_PHI_ATL |
| Steve Busby | KCA | -1.79 | 197307220_MIL_KCA |
| Jimmy Freeman | ATL | -1.35 | 197307221_PHI_ATL |
| Marty Pattin | BOS | -1.03 | 197307210_MIN_BOS |
Based on accumulated WAA for this season up to 1973-07-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.7 | Tom Seaver | 169.7 | NYN |
| +002+ | 6.59 | Ken Holtzman | 205.7 | OAK |
| +007+ | 4.94 | Bert Blyleven | 191 | MIN |
| +009+ | 4.82 | Don Sutton | 181 | LAN |
| +012+ | 4.6 | Wayne Twitchell | 137.7 | PHI |
| +014+ | 4.41 | Bill Lee | 168 | BOS |
| +015+ | 4.25 | Wilbur Wood | 253.7 | CHA |
| +017+ | 4.01 | Dave McNally | 172.7 | BAL |
| +018+ | 3.98 | Bill Singer | 194 | ANA |
| +019+ | 3.95 | Rick Reuschel | 159 | CHN |
| +020+ | 3.92 | Rollie Fingers | 79.7 | OAK |
| +021+ | 3.9 | Jim Colborn | 192.7 | MIL |
| +023+ | 3.73 | Nolan Ryan | 205.7 | ANA |
| +024+ | 3.67 | Bob Gibson | 179 | SLN |
| +025+ | 3.67 | Ross Grimsley | 156.7 | CIN |
| +031+ | 3.42 | Fred Beene | 67.3 | NYA |
| +032+ | 3.42 | Stan Bahnsen | 185.7 | CHA |
| +033+ | 3.39 | Nelson Briles | 143 | PIT |
| +037+ | 3.13 | Jim Palmer | 169.7 | BAL |
| +038+ | 3.08 | Jack Billingham | 179 | CIN |
| +039+ | 3.06 | Mel Stottlemyre | 172.7 | NYA |
| +040+ | 3.05 | Ron Bryant | 175.7 | SFN |
| +041+ | 3.02 | Sonny Siebert | 79.3 | TOT |
| +046+ | 2.91 | Dave Roberts | 152.7 | HOU |
| +055+ | 2.67 | Steve Renko | 144 | WAS |
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