| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 6.12 | 197308080_BAL_MIN |
| Ken Holtzman | OAK | 5.95 | 197308080_OAK_DET |
| Don Sutton | LAN | 5.84 | 197308070_LAN_SDN |
| Rick Reuschel | CHN | 3.22 | 197308070_CHN_CIN |
| Nolan Ryan | ANA | 3.21 | 197308070_ANA_MIL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Woodie Fryman | DET | -2.28 | 197308080_OAK_DET |
| Dick Tidrow | CLE | -1.62 | 197308080_CLE_CHA |
| Clay Kirby | SDN | -0.75 | 197308060_LAN_SDN |
| Balor Moore | WAS | -0.65 | 197308060_CHN_WAS |
| Ron Schueler | ATL | -0.42 | 197308080_ATL_SLN |
Based on accumulated WAA for this season up to 1973-08-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.15 | Tom Seaver | 194.7 | NYN |
| +002+ | 7.04 | Ken Holtzman | 231.3 | OAK |
| +006+ | 6.21 | Wayne Twitchell | 163.7 | PHI |
| +007+ | 6.01 | Don Sutton | 203 | LAN |
| +010+ | 5.64 | Rick Reuschel | 182.7 | CHN |
| +011+ | 5.57 | Jim Palmer | 205.7 | BAL |
| +012+ | 5.34 | Bert Blyleven | 216 | MIN |
| +018+ | 4.46 | Fred Beene | 89 | NYA |
| +021+ | 4.32 | Bill Lee | 191.3 | BOS |
| +025+ | 4 | Nolan Ryan | 229.3 | ANA |
| +026+ | 3.95 | Bob Gibson | 189 | SLN |
| +028+ | 3.91 | Jim Colborn | 219.7 | MIL |
| +032+ | 3.51 | Steve Renko | 166.3 | WAS |
| +035+ | 3.38 | Nelson Briles | 164.7 | PIT |
| +037+ | 3.35 | Ron Bryant | 196.7 | SFN |
| +039+ | 3.28 | Bill Singer | 216 | ANA |
| +041+ | 3.23 | Rick Wise | 180.7 | SLN |
| +042+ | 3.22 | Stan Bahnsen | 209 | CHA |
| +043+ | 3.2 | Dock Ellis | 155.3 | PIT |
| +046+ | 3.17 | Don Wilson | 183.3 | HOU |
| +048+ | 3.16 | Ross Grimsley | 168.7 | CIN |
| +051+ | 3.11 | Dave McNally | 181.7 | BAL |
| +052+ | 3.1 | Andy Messersmith | 190.7 | LAN |
| +060+ | 2.82 | Tommy John | 141.3 | LAN |
| +061+ | 2.72 | Sonny Siebert | 85.3 | TOT |
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