| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 9.26 | 197307130_BAL_CHA |
| Tom Seaver | NYN | 8.56 | 197307131_NYN_CIN |
| Ken Holtzman | OAK | 5.36 | 197307130_OAK_MIL |
| Jim Palmer | BAL | 4.78 | 197307140_BAL_CHA |
| Bill Lee | BOS | 4.07 | 197307140_TEX_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Lonborg | PHI | -2.55 | 197307120_HOU_PHI |
| Steve Dunning | TEX | -2.38 | 197307140_TEX_BOS |
| Brent Strom | CLE | -2.2 | 197307122_CLE_MIN |
| 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 1973-07-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.75 | Ken Holtzman | 180.7 | OAK |
| +003+ | 5.86 | Bert Blyleven | 176.7 | MIN |
| +004+ | 5.75 | Wilbur Wood | 236 | CHA |
| +005+ | 5.71 | Tom Seaver | 151.7 | NYN |
| +009+ | 4.98 | Rick Reuschel | 141 | CHN |
| +010+ | 4.85 | Don Sutton | 166 | LAN |
| +011+ | 4.82 | Wayne Twitchell | 131 | PHI |
| +012+ | 4.76 | Bill Singer | 178 | ANA |
| +013+ | 4.67 | Bill Lee | 154 | BOS |
| +018+ | 3.88 | Dave McNally | 156.3 | BAL |
| +019+ | 3.81 | Rollie Fingers | 71 | OAK |
| +024+ | 3.25 | Mel Stottlemyre | 159.3 | NYA |
| +027+ | 3.06 | Ross Grimsley | 132.3 | CIN |
| +028+ | 3.05 | Fred Beene | 62.7 | NYA |
| +029+ | 3.03 | Steve Renko | 124.3 | WAS |
| +030+ | 3.02 | Sonny Siebert | 79.3 | TOT |
| +036+ | 2.84 | Nolan Ryan | 180 | ANA |
| +044+ | 2.69 | Rick Wise | 148 | SLN |
| +045+ | 2.65 | Jim Colborn | 165.7 | MIL |
| +048+ | 2.53 | Nelson Briles | 128 | PIT |
| +053+ | 2.44 | Jim Palmer | 151.7 | BAL |
| +055+ | 2.31 | Ron Bryant | 159 | SFN |
| +057+ | 2.26 | Tommy John | 111.7 | LAN |
| +061+ | 2.23 | Dave Roberts | 133 | HOU |
| +062+ | 2.23 | John Curtis | 133.3 | BOS |
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