| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bert Blyleven | MIN | 8.4 | 197307150_CLE_MIN |
| Don Sutton | LAN | 6.48 | 197307160_LAN_PIT |
| Jim Palmer | BAL | 4.78 | 197307140_BAL_CHA |
| Bill Lee | BOS | 4.07 | 197307140_TEX_BOS |
| Rick Reuschel | CHN | 3.03 | 197307150_CHN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Milt Wilcox | CLE | -2.93 | 197307160_CLE_ANA |
| Steve Dunning | TEX | -2.38 | 197307140_TEX_BOS |
| Johnny Odom | OAK | -1.82 | 197307150_OAK_MIL |
| Steve Busby | KCA | -1.19 | 197307140_KCA_NYA |
| Balor Moore | WAS | -0.89 | 197307140_WAS_ATL |
Based on accumulated WAA for this season up to 1973-07-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.76 | Ken Holtzman | 180.7 | OAK |
| +004+ | 5.76 | Tom Seaver | 151.7 | NYN |
| +005+ | 5.73 | Wilbur Wood | 236 | CHA |
| +007+ | 5.61 | Don Sutton | 175 | LAN |
| +008+ | 5.56 | Bert Blyleven | 185.3 | MIN |
| +010+ | 4.88 | Wayne Twitchell | 131 | PHI |
| +012+ | 4.69 | Bill Lee | 154 | BOS |
| +011+ | 4.69 | Bill Singer | 184.3 | ANA |
| +016+ | 4.39 | Rollie Fingers | 77.7 | OAK |
| +017+ | 4.26 | Rick Reuschel | 147 | CHN |
| +020+ | 3.9 | Dave McNally | 156.3 | BAL |
| +021+ | 3.64 | Ross Grimsley | 141.3 | CIN |
| +022+ | 3.63 | Nolan Ryan | 189 | ANA |
| +027+ | 3.26 | Mel Stottlemyre | 159.3 | NYA |
| +031+ | 3.06 | Sonny Siebert | 79.3 | TOT |
| +032+ | 3.06 | Fred Beene | 62.7 | NYA |
| +033+ | 3.04 | Nelson Briles | 136 | PIT |
| +042+ | 2.72 | Dave Roberts | 138 | HOU |
| +045+ | 2.7 | Steve Renko | 130 | WAS |
| +047+ | 2.66 | Jim Colborn | 165.7 | MIL |
| +049+ | 2.59 | Rick Wise | 148 | SLN |
| +054+ | 2.47 | Bob Gibson | 161 | SLN |
| +057+ | 2.45 | Jim Palmer | 151.7 | BAL |
| +062+ | 2.34 | Ron Bryant | 159 | SFN |
| +061+ | 2.34 | Ken Brett | 97 | PHI |
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