| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 10.75 | 197308011_PIT_NYN |
| Bert Blyleven | MIN | 6.1 | 197308010_MIN_OAK |
| Jim Palmer | BAL | 5.54 | 197307310_BAL_CLE |
| Ken Holtzman | OAK | 5.34 | 197307310_MIN_OAK |
| Wilbur Wood | CHA | 3.8 | 197308010_KCA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Blass | PIT | -14.26 | 197308011_PIT_NYN |
| Bill Stoneman | WAS | -3.84 | 197308011_SLN_WAS |
| Woodie Fryman | DET | -2.53 | 197307312_DET_MIL |
| Dick Bosman | CLE | -2.17 | 197308010_BAL_CLE |
| Jim Lonborg | PHI | -1.89 | 197307311_CHN_PHI |
Based on accumulated WAA for this season up to 1973-08-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.04 | Tom Seaver | 187.7 | NYN |
| +002+ | 6.9 | Ken Holtzman | 216.7 | OAK |
| +006+ | 6.19 | Wayne Twitchell | 155.7 | PHI |
| +009+ | 5.1 | Don Sutton | 186 | LAN |
| +012+ | 4.85 | Bert Blyleven | 207 | MIN |
| +014+ | 4.48 | Jim Palmer | 187.7 | BAL |
| +015+ | 4.44 | Rick Reuschel | 166.7 | CHN |
| +018+ | 4.33 | Bill Lee | 183.3 | BOS |
| +021+ | 4.04 | Dave McNally | 172.7 | BAL |
| +022+ | 4.01 | Stan Bahnsen | 194.7 | CHA |
| +024+ | 3.83 | Nolan Ryan | 211.3 | ANA |
| +026+ | 3.78 | Bob Gibson | 187 | SLN |
| +027+ | 3.66 | Jim Colborn | 201.7 | MIL |
| +032+ | 3.52 | Fred Beene | 75.3 | NYA |
| +031+ | 3.52 | Wilbur Wood | 269.3 | CHA |
| +035+ | 3.24 | Bill Singer | 199.7 | ANA |
| +037+ | 3.16 | Dave Roberts | 160.3 | HOU |
| +041+ | 3 | Lindy McDaniel | 102.7 | NYA |
| +042+ | 2.98 | Steve Renko | 150 | WAS |
| +044+ | 2.93 | Nelson Briles | 156.7 | PIT |
| +047+ | 2.83 | Dock Ellis | 148.3 | PIT |
| +049+ | 2.79 | Ron Bryant | 181.7 | SFN |
| +053+ | 2.69 | Ross Grimsley | 159.7 | CIN |
| +055+ | 2.66 | Rick Wise | 171.7 | SLN |
| +056+ | 2.66 | Tommy John | 133.7 | LAN |
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