| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 10.05 | 197307270_NYN_SLN |
| Ken Holtzman | OAK | 5.82 | 197307262_OAK_MIN |
| Bert Blyleven | MIN | 5.67 | 197307270_OAK_MIN |
| Don Sutton | LAN | 5.57 | 197307280_SFN_LAN |
| Wilbur Wood | CHA | 5.02 | 197307261_CHA_KCA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Kekich | CLE | -3.03 | 197307280_BOS_CLE |
| Steve Dunning | TEX | -2.83 | 197307280_TEX_OAK |
| Johnny Odom | OAK | -2.55 | 197307280_TEX_OAK |
| Steve Busby | KCA | -2.01 | 197307270_CHA_KCA |
| Jim Lonborg | PHI | -1.99 | 197307270_WAS_PHI |
Based on accumulated WAA for this season up to 1973-07-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.3 | Tom Seaver | 178.7 | NYN |
| +002+ | 6.64 | Ken Holtzman | 205.7 | OAK |
| +007+ | 5.41 | Wayne Twitchell | 146.7 | PHI |
| +008+ | 5.33 | Bert Blyleven | 200 | MIN |
| +009+ | 5.06 | Don Sutton | 186 | LAN |
| +013+ | 4.47 | Bill Lee | 175.3 | BOS |
| +015+ | 4.3 | Wilbur Wood | 253.7 | CHA |
| +018+ | 4.05 | Dave McNally | 172.7 | BAL |
| +020+ | 4.03 | Bill Singer | 194 | ANA |
| +019+ | 4.03 | Rollie Fingers | 80.7 | OAK |
| +021+ | 3.98 | Rick Reuschel | 159 | CHN |
| +022+ | 3.95 | Jim Colborn | 192.7 | MIL |
| +024+ | 3.93 | Jim Palmer | 178.7 | BAL |
| +025+ | 3.78 | Nolan Ryan | 205.7 | ANA |
| +028+ | 3.7 | Bob Gibson | 179 | SLN |
| +029+ | 3.68 | Ross Grimsley | 156.7 | CIN |
| +030+ | 3.46 | Stan Bahnsen | 185.7 | CHA |
| +031+ | 3.46 | Jack Billingham | 188 | CIN |
| +032+ | 3.44 | Fred Beene | 67.3 | NYA |
| +037+ | 3.08 | Ron Bryant | 175.7 | SFN |
| +039+ | 3.04 | Sonny Siebert | 79.3 | TOT |
| +044+ | 2.94 | Nelson Briles | 149.7 | PIT |
| +045+ | 2.93 | Dave Roberts | 152.7 | HOU |
| +046+ | 2.91 | Lindy McDaniel | 99.3 | NYA |
| +053+ | 2.7 | Steve Renko | 144 | WAS |
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