| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 9.26 | 197307130_BAL_CHA |
| Tom Seaver | NYN | 8.56 | 197307131_NYN_CIN |
| Bert Blyleven | MIN | 8.4 | 197307150_CLE_MIN |
| Ken Holtzman | OAK | 5.36 | 197307130_OAK_MIL |
| Jim Palmer | BAL | 4.78 | 197307140_BAL_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Dunning | TEX | -2.38 | 197307140_TEX_BOS |
| Dick Bosman | CLE | -1.96 | 197307130_CLE_MIN |
| Johnny Odom | OAK | -1.82 | 197307150_OAK_MIL |
| Steve Busby | KCA | -1.19 | 197307140_KCA_NYA |
| Jim McGlothlin | CIN | -1.17 | 197307132_NYN_CIN |
Based on accumulated WAA for this season up to 1973-07-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.74 | Ken Holtzman | 180.7 | OAK |
| +004+ | 5.74 | Wilbur Wood | 236 | CHA |
| +005+ | 5.72 | Tom Seaver | 151.7 | NYN |
| +007+ | 5.53 | Bert Blyleven | 185.3 | MIN |
| +010+ | 4.85 | Don Sutton | 166 | LAN |
| +009+ | 4.85 | Wayne Twitchell | 131 | PHI |
| +011+ | 4.75 | Bill Singer | 178 | ANA |
| +012+ | 4.71 | Bill Lee | 154 | BOS |
| +013+ | 4.38 | Rollie Fingers | 77.7 | OAK |
| +016+ | 4.24 | Rick Reuschel | 147 | CHN |
| +020+ | 3.88 | Dave McNally | 156.3 | BAL |
| +021+ | 3.62 | Ross Grimsley | 141.3 | CIN |
| +023+ | 3.61 | Nolan Ryan | 189 | ANA |
| +027+ | 3.24 | Mel Stottlemyre | 159.3 | NYA |
| +029+ | 3.05 | Sonny Siebert | 79.3 | TOT |
| +030+ | 3.05 | Fred Beene | 62.7 | NYA |
| +031+ | 3.04 | Steve Renko | 124.3 | WAS |
| +043+ | 2.71 | Dave Roberts | 138 | HOU |
| +047+ | 2.64 | Jim Colborn | 165.7 | MIL |
| +050+ | 2.58 | Rick Wise | 148 | SLN |
| +052+ | 2.54 | Nelson Briles | 128 | PIT |
| +056+ | 2.43 | Jim Palmer | 151.7 | BAL |
| +059+ | 2.3 | Ron Bryant | 159 | SFN |
| +062+ | 2.26 | Tommy John | 111.7 | LAN |
| +061+ | 2.26 | John Curtis | 133.3 | BOS |
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