| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bert Blyleven | MIN | 6.56 | 197309220_ANA_MIN |
| Nolan Ryan | ANA | 5.28 | 197309230_ANA_MIN |
| Don Sutton | LAN | 5.07 | 197309220_CIN_LAN |
| Bill Lee | BOS | 3.55 | 197309220_BOS_DET |
| Steve Renko | WAS | 2.87 | 197309241_PIT_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Stoneman | WAS | -4.77 | 197309231_PIT_WAS |
| Milt Wilcox | CLE | -3.62 | 197309232_NYA_CLE |
| Steve Arlin | SDN | -2.91 | 197309220_SDN_SFN |
| Pete Broberg | TEX | -2.7 | 197309240_TEX_ANA |
| Marty Pattin | BOS | -1.63 | 197309240_BOS_DET |
Based on accumulated WAA for this season up to 1973-09-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.96 | Tom Seaver | 282 | NYN |
| +003+ | 9.69 | Jim Palmer | 289.7 | BAL |
| +006+ | 8.59 | Bert Blyleven | 308 | MIN |
| +008+ | 6.97 | Steve Rogers | 122.7 | WAS |
| +009+ | 6.87 | Nolan Ryan | 315 | ANA |
| +011+ | 6.64 | Wayne Twitchell | 223.3 | PHI |
| +013+ | 6.5 | Don Sutton | 247.3 | LAN |
| +014+ | 6.41 | Bill Lee | 276.7 | BOS |
| +021+ | 5.48 | Steve Renko | 244.7 | WAS |
| +022+ | 5.45 | Ken Holtzman | 290.3 | OAK |
| +023+ | 5.44 | Andy Messersmith | 249.7 | LAN |
| +033+ | 4.77 | Nelson Briles | 218.7 | PIT |
| +034+ | 4.74 | Jack Billingham | 277.3 | CIN |
| +035+ | 4.67 | Bob Reynolds | 109 | BAL |
| +039+ | 4.3 | Mel Stottlemyre | 264 | NYA |
| +040+ | 4.25 | Dave Roberts | 234.3 | HOU |
| +041+ | 4.24 | Lindy McDaniel | 155.3 | NYA |
| +045+ | 4.05 | Doc Medich | 226 | NYA |
| +047+ | 3.99 | Dave McNally | 260.3 | BAL |
| +049+ | 3.92 | Jerry Koosman | 247.3 | NYN |
| +057+ | 3.64 | Rick Reuschel | 230 | CHN |
| +058+ | 3.61 | Bill Singer | 294.7 | ANA |
| +061+ | 3.38 | Jim Colborn | 297.3 | MIL |
| +067+ | 3.2 | Terry Forster | 161.3 | CHA |
| +070+ | 3.12 | George Stone | 148 | NYN |
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