| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 9.41 | 197307220_NYN_HOU |
| Wilbur Wood | CHA | 8.44 | 197307201_CHA_NYA |
| Don Sutton | LAN | 7.2 | 197307210_LAN_SLN |
| Bert Blyleven | MIN | 6.79 | 197307200_MIN_BOS |
| Ken Holtzman | OAK | 5.18 | 197307220_CLE_OAK |
| 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 |
| Mike Torrez | WAS | -1.47 | 197307200_WAS_CIN |
| Jimmy Freeman | ATL | -1.35 | 197307221_PHI_ATL |
Based on accumulated WAA for this season up to 1973-07-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.76 | Ken Holtzman | 198 | OAK |
| +002+ | 6.68 | Tom Seaver | 169.7 | NYN |
| +007+ | 4.98 | Bert Blyleven | 191 | MIN |
| +009+ | 4.82 | Don Sutton | 181 | LAN |
| +010+ | 4.74 | Bill Singer | 193.3 | ANA |
| +012+ | 4.61 | Wayne Twitchell | 137.7 | PHI |
| +014+ | 4.44 | Rollie Fingers | 78.3 | OAK |
| +016+ | 4.41 | Bill Lee | 168 | BOS |
| +017+ | 4.2 | Dave McNally | 172.3 | BAL |
| +018+ | 4.14 | Wilbur Wood | 247.7 | CHA |
| +020+ | 4 | Nolan Ryan | 199.3 | ANA |
| +021+ | 3.99 | Rick Reuschel | 152 | CHN |
| +022+ | 3.89 | Ross Grimsley | 149.3 | CIN |
| +027+ | 3.45 | Fred Beene | 67.3 | NYA |
| +030+ | 3.4 | Nelson Briles | 143 | PIT |
| +032+ | 3.19 | Jim Colborn | 181.3 | MIL |
| +035+ | 3.14 | Jim Palmer | 169.7 | BAL |
| +036+ | 3.13 | Mel Stottlemyre | 172.7 | NYA |
| +037+ | 3.1 | Jack Billingham | 179 | CIN |
| +038+ | 3.04 | Dave Roberts | 147 | HOU |
| +039+ | 3.03 | Sonny Siebert | 79.3 | TOT |
| +042+ | 2.93 | Stan Bahnsen | 177.7 | CHA |
| +045+ | 2.91 | Bob Gibson | 170 | SLN |
| +057+ | 2.55 | Lindy McDaniel | 92.7 | NYA |
| +058+ | 2.51 | Ron Bryant | 166.7 | SFN |
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