| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mort Cooper | SLN | 5.69 | 194306140_CIN_SLN |
| Spud Chandler | NYA | 4.99 | 194306140_NYA_MIN |
| Johnny Vander Meer | CIN | 4.61 | 194306120_CIN_CHN |
| Thornton Lee | CHA | 3.74 | 194306120_CHA_DET |
| Tex Hughson | BOS | 3.72 | 194306132_MIN_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Al Milnar | CLE | -4.94 | 194306131_BAL_CLE |
| Bill Dietrich | CHA | -1.81 | 194306131_CHA_DET |
| Bill Zuber | NYA | -1.28 | 194306132_NYA_OAK |
| Johnnie Wittig | SFN | -0.98 | 194306122_PHI_SFN |
| Bill Lee | CHN | -0.87 | 194306132_CIN_CHN |
Based on accumulated WAA for this season up to 1943-06-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.29 | Tex Hughson | 107 | BOS |
| +002+ | 3.18 | Mort Cooper | 99.7 | SLN |
| +003+ | 2.97 | Hal Newhouser | 65 | DET |
| +006+ | 2.44 | Johnny Niggeling | 74.3 | BAL |
| +007+ | 2.36 | Nate Andrews | 100.3 | ATL |
| +008+ | 2.21 | Tiny Bonham | 69.7 | NYA |
| +010+ | 2.17 | Spud Chandler | 83.3 | NYA |
| +011+ | 2.08 | Milo Candini | 34.3 | MIN |
| +015+ | 1.86 | Jack Kraus | 67.7 | PHI |
| +018+ | 1.64 | Dutch Leonard | 83 | MIN |
| +019+ | 1.64 | Al Smith | 60 | CLE |
| +021+ | 1.62 | Denny Galehouse | 51.3 | BAL |
| +022+ | 1.58 | Roger Wolff | 80 | OAK |
| +023+ | 1.57 | Red Barrett | 74.7 | ATL |
| +024+ | 1.55 | Howie Pollet | 66.3 | SLN |
| +031+ | 1.34 | Virgil Trucks | 68.7 | DET |
| +033+ | 1.34 | Max Lanier | 69.3 | SLN |
| +032+ | 1.34 | Bob Muncrief | 41.7 | BAL |
| +034+ | 1.33 | Jesse Flores | 82.3 | OAK |
| +039+ | 1.29 | Jack Hallett | 38.7 | PIT |
| XXXXX | 1.19 | Oscar Judd | 72 | BOS |
| XXXXX | 1.19 | Butch Wensloff | 53 | NYA |
| XXXXX | 1.06 | Early Wynn | 86.7 | MIN |
| XXXXX | 1.03 | Bobo Newsom | 78.7 | LAN |
| XXXXX | 1.03 | Thornton Lee | 38.7 | CHA |
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