| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 5.89 | 197308040_BOS_BAL |
| Don Sutton | LAN | 5.83 | 197308020_LAN_HOU |
| Ken Holtzman | OAK | 5.71 | 197308040_OAK_ANA |
| Wilbur Wood | CHA | 3.42 | 197308040_TEX_CHA |
| Bob Gibson | SLN | 2.89 | 197308040_SLN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Woodie Fryman | DET | -2.65 | 197308040_NYA_DET |
| Jim Lonborg | PHI | -2.22 | 197308042_PIT_PHI |
| Balor Moore | WAS | -1.29 | 197308020_SLN_WAS |
| Carl Morton | ATL | -1.16 | 197308042_SDN_ATL |
| Dick Tidrow | CLE | -1.1 | 197308040_MIL_CLE |
Based on accumulated WAA for this season up to 1973-08-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.05 | Tom Seaver | 187.7 | NYN |
| +002+ | 7.09 | Ken Holtzman | 224 | OAK |
| +005+ | 6.2 | Wayne Twitchell | 155.7 | PHI |
| +009+ | 5.48 | Don Sutton | 196 | LAN |
| +010+ | 5.26 | Rick Reuschel | 175.7 | CHN |
| +011+ | 5.07 | Jim Palmer | 196.7 | BAL |
| +013+ | 4.86 | Bert Blyleven | 207 | MIN |
| +019+ | 4.44 | Bill Lee | 191.3 | BOS |
| +020+ | 4.37 | Stan Bahnsen | 203.7 | CHA |
| +021+ | 4.16 | Nolan Ryan | 220.3 | ANA |
| +024+ | 3.99 | Bob Gibson | 189 | SLN |
| +025+ | 3.95 | Bill Singer | 210.7 | ANA |
| +027+ | 3.91 | Fred Beene | 80 | NYA |
| +031+ | 3.62 | Jim Colborn | 210.7 | MIL |
| +036+ | 3.3 | Wilbur Wood | 276.3 | CHA |
| +035+ | 3.3 | Dave McNally | 176 | BAL |
| +042+ | 3.07 | Ron Bryant | 190 | SFN |
| +045+ | 2.99 | Steve Renko | 157.3 | WAS |
| +047+ | 2.96 | Nelson Briles | 156.7 | PIT |
| +048+ | 2.96 | Sonny Siebert | 85.3 | TOT |
| +049+ | 2.95 | Dave Roberts | 165.7 | HOU |
| +053+ | 2.86 | Dock Ellis | 148.3 | PIT |
| +058+ | 2.7 | Andy Messersmith | 182.7 | LAN |
| +057+ | 2.7 | Rick Wise | 171.7 | SLN |
| +061+ | 2.66 | Ross Grimsley | 159.7 | CIN |
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