| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 9.93 | 197307090_NYA_CHA |
| Tom Seaver | NYN | 8.2 | 197307090_HOU_NYN |
| Bert Blyleven | MIN | 7.32 | 197307071_NYA_MIN |
| Ken Holtzman | OAK | 5.67 | 197307070_OAK_BAL |
| Dave McNally | BAL | 4.75 | 197307090_ANA_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ron Reed | ATL | -2.46 | 197307090_ATL_PHI |
| Dick Bosman | CLE | -2.1 | 197307082_ANA_CLE |
| Jim Lonborg | PHI | -1.93 | 197307070_CIN_PHI |
| Steve Dunning | TEX | -1.45 | 197307090_TEX_DET |
| Jim McGlothlin | CIN | -1.43 | 197307070_CIN_PHI |
Based on accumulated WAA for this season up to 1973-07-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.52 | Ken Holtzman | 174.3 | OAK |
| +004+ | 5.46 | Tom Seaver | 144.7 | NYN |
| +005+ | 5.31 | Wilbur Wood | 227 | CHA |
| +006+ | 5.21 | Bill Singer | 177 | ANA |
| +007+ | 5.02 | Bert Blyleven | 167.7 | MIN |
| +009+ | 4.83 | Bill Lee | 147 | BOS |
| +012+ | 4.62 | Wayne Twitchell | 122 | PHI |
| +013+ | 4.32 | Rick Reuschel | 132 | CHN |
| +014+ | 4.23 | Don Sutton | 157 | LAN |
| +016+ | 3.76 | Rollie Fingers | 66 | OAK |
| +019+ | 3.61 | Ron Bryant | 150.3 | SFN |
| +020+ | 3.51 | Dave McNally | 147.7 | BAL |
| +021+ | 3.48 | Nolan Ryan | 174 | ANA |
| +026+ | 3.1 | Jim Palmer | 135.3 | BAL |
| +029+ | 2.97 | Sonny Siebert | 79.3 | TOT |
| +034+ | 2.82 | Fred Beene | 60.3 | NYA |
| +035+ | 2.81 | Ross Grimsley | 125.3 | CIN |
| +045+ | 2.48 | Steve Renko | 116.3 | WAS |
| +046+ | 2.45 | Jerry Koosman | 131.7 | NYN |
| +049+ | 2.41 | Doc Medich | 122 | NYA |
| +050+ | 2.4 | Mel Stottlemyre | 150.3 | NYA |
| +051+ | 2.39 | John Curtis | 128.7 | BOS |
| +054+ | 2.33 | Rick Wise | 140 | SLN |
| +056+ | 2.31 | Jim Colborn | 147.7 | MIL |
| +059+ | 2.22 | Bob Gibson | 146 | SLN |
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