| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 9.26 | 197307130_BAL_CHA |
| Tom Seaver | NYN | 8.56 | 197307131_NYN_CIN |
| Bert Blyleven | MIN | 7.66 | 197307110_BOS_MIN |
| Don Sutton | LAN | 6.19 | 197307110_SLN_LAN |
| Ken Holtzman | OAK | 5.36 | 197307130_OAK_MIL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lloyd Allen | TEX | -4.25 | 197307110_TEX_DET |
| Jim Lonborg | PHI | -2.55 | 197307120_HOU_PHI |
| Brent Strom | CLE | -2.2 | 197307122_CLE_MIN |
| Jim McGlothlin | CIN | -1.17 | 197307132_NYN_CIN |
| Steve Arlin | SDN | -1.16 | 197307110_PIT_SDN |
Based on accumulated WAA for this season up to 1973-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.74 | Ken Holtzman | 180.7 | OAK |
| +003+ | 5.87 | Bert Blyleven | 176.7 | MIN |
| +004+ | 5.77 | Wilbur Wood | 236 | CHA |
| +006+ | 5.72 | Tom Seaver | 151.7 | NYN |
| +009+ | 4.97 | Rick Reuschel | 141 | CHN |
| +010+ | 4.91 | Bill Lee | 147 | BOS |
| +011+ | 4.85 | Don Sutton | 166 | LAN |
| +012+ | 4.82 | Wayne Twitchell | 131 | PHI |
| +013+ | 4.77 | Bill Singer | 178 | ANA |
| +018+ | 3.89 | Dave McNally | 156.3 | BAL |
| +019+ | 3.8 | Rollie Fingers | 71 | OAK |
| +024+ | 3.44 | Ron Bryant | 157.3 | SFN |
| +025+ | 3.26 | Mel Stottlemyre | 159.3 | NYA |
| +028+ | 3.07 | Ross Grimsley | 132.3 | CIN |
| +030+ | 3.02 | Sonny Siebert | 79.3 | TOT |
| +029+ | 3.02 | Steve Renko | 124.3 | WAS |
| +035+ | 2.85 | Fred Beene | 60.3 | NYA |
| +036+ | 2.84 | Nolan Ryan | 180 | ANA |
| +042+ | 2.7 | Rick Wise | 148 | SLN |
| +047+ | 2.6 | Jim Palmer | 143.7 | BAL |
| +049+ | 2.54 | Nelson Briles | 128 | PIT |
| +052+ | 2.46 | Doc Medich | 122 | NYA |
| +054+ | 2.46 | Stan Bahnsen | 158.3 | CHA |
| +061+ | 2.27 | Tommy John | 111.7 | LAN |
| +063+ | 2.24 | John Curtis | 133.3 | BOS |
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