| 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 |
| Wilbur Wood | CHA | 5.02 | 197307261_CHA_KCA |
| Jim Palmer | BAL | 4.72 | 197307271_CLE_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Lonborg | PHI | -2.33 | 197307222_PHI_ATL |
| Steve Busby | KCA | -2.01 | 197307270_CHA_KCA |
| Brent Strom | CLE | -1.89 | 197307272_CLE_BAL |
| Jimmy Freeman | ATL | -1.35 | 197307221_PHI_ATL |
| Clay Kirby | SDN | -0.94 | 197307222_SDN_PIT |
Based on accumulated WAA for this season up to 1973-07-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.28 | Tom Seaver | 178.7 | NYN |
| +002+ | 6.63 | Ken Holtzman | 205.7 | OAK |
| +007+ | 5.32 | Bert Blyleven | 200 | MIN |
| +009+ | 4.84 | Don Sutton | 181 | LAN |
| +012+ | 4.61 | Wayne Twitchell | 137.7 | PHI |
| +013+ | 4.46 | Bill Lee | 175.3 | BOS |
| +015+ | 4.25 | Wilbur Wood | 253.7 | CHA |
| +018+ | 4.03 | Dave McNally | 172.7 | BAL |
| +019+ | 4.02 | Rollie Fingers | 80.7 | OAK |
| +020+ | 4.02 | Bill Singer | 194 | ANA |
| +021+ | 3.96 | Rick Reuschel | 159 | CHN |
| +022+ | 3.93 | Jim Colborn | 192.7 | MIL |
| +023+ | 3.92 | Jim Palmer | 178.7 | BAL |
| +024+ | 3.77 | Nolan Ryan | 205.7 | ANA |
| +026+ | 3.69 | Bob Gibson | 179 | SLN |
| +027+ | 3.69 | Ross Grimsley | 156.7 | CIN |
| +032+ | 3.46 | Jack Billingham | 188 | CIN |
| +033+ | 3.43 | Fred Beene | 67.3 | NYA |
| +034+ | 3.42 | Stan Bahnsen | 185.7 | CHA |
| +039+ | 3.06 | Ron Bryant | 175.7 | SFN |
| +040+ | 3.03 | Sonny Siebert | 79.3 | TOT |
| +045+ | 2.93 | Nelson Briles | 149.7 | PIT |
| +046+ | 2.92 | Dave Roberts | 152.7 | HOU |
| +047+ | 2.89 | Lindy McDaniel | 99.3 | NYA |
| +051+ | 2.68 | Steve Renko | 144 | WAS |
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