| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mort Cooper | SLN | 6.35 | 194309170_CHN_SLN |
| Hi Bithorn | CHN | 2.52 | 194309160_CHN_SLN |
| Nate Andrews | ATL | 2.27 | 194309181_PHI_ATL |
| Butch Wensloff | NYA | 2.21 | 194309170_NYA_MIN |
| Whit Wyatt | LAN | 2.19 | 194309180_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Chase | SFN | -3.35 | 194309170_LAN_SFN |
| Lum Harris | OAK | -2.22 | 194309160_OAK_NYA |
| Bobo Newsom | MIN | -2.14 | 194309170_NYA_MIN |
| Al Gerheauser | PHI | -1.05 | 194309181_PHI_ATL |
| Marius Russo | NYA | -0.95 | 194309160_OAK_NYA |
Based on accumulated WAA for this season up to 1943-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.7 | Spud Chandler | 226.3 | NYA |
| +003+ | 6.74 | Mort Cooper | 260 | SLN |
| +006+ | 5.77 | Max Lanier | 195.3 | SLN |
| +009+ | 5.49 | Tiny Bonham | 206.7 | NYA |
| +010+ | 5.33 | Tommy Bridges | 180.7 | DET |
| +015+ | 4.69 | Rip Sewell | 256.3 | PIT |
| +016+ | 4.43 | Nate Andrews | 254 | ATL |
| +017+ | 4.43 | Elmer Riddle | 232.3 | CIN |
| +020+ | 4.34 | Tex Hughson | 247 | BOS |
| +022+ | 3.99 | Whit Wyatt | 165.3 | LAN |
| +030+ | 3.6 | Milo Candini | 156 | MIN |
| +032+ | 3.41 | Dizzy Trout | 218.3 | DET |
| +036+ | 3.35 | Butch Wensloff | 203.3 | NYA |
| +035+ | 3.35 | Al Brazle | 71 | SLN |
| +037+ | 3.34 | Early Wynn | 238.7 | MIN |
| +039+ | 3.26 | Hi Bithorn | 220.7 | CHN |
| +040+ | 3.11 | Vern Kennedy | 141.3 | CLE |
| +041+ | 3.08 | Al Smith | 184.7 | CLE |
| +045+ | 2.93 | Max Butcher | 174.7 | PIT |
| +046+ | 2.92 | Bob Muncrief | 193 | BAL |
| +047+ | 2.89 | Denny Galehouse | 198 | BAL |
| +049+ | 2.84 | Mickey Haefner | 138.3 | MIN |
| +053+ | 2.76 | Ed Hanyzewski | 116.7 | CHN |
| +054+ | 2.71 | Schoolboy Rowe | 185.3 | PHI |
| +056+ | 2.6 | Harry Brecheen | 121.3 | SLN |
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