| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Chase | MIN | -2.3 | 193809131_MIN_CHA |
| Bobo Newsom | BAL | -2.16 | 193809140_OAK_BAL |
| Buck Ross | OAK | -1.24 | 193809151_OAK_CHA |
| Slick Coffman | DET | -1.19 | 193809150_NYA_DET |
| Fritz Ostermueller | BOS | -0.35 | 193809152_BOS_CLE |
Based on accumulated WAA for this season up to 1938-09-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 7.97 | Bill Lee | 254.7 | CHN |
| +009+ | 7.18 | Paul Derringer | 273 | CIN |
| +017+ | 6.52 | Lou Fette | 229 | ATL |
| +018+ | 6.48 | Freddie Fitzsimmons | 185.7 | LAN |
| +022+ | 5.72 | Red Ruffing | 227.3 | NYA |
| +023+ | 5.61 | Johnny Vander Meer | 195.3 | CIN |
| +025+ | 5.55 | Danny MacFayden | 185.3 | ATL |
| +026+ | 5.44 | Thornton Lee | 218.3 | CHA |
| +027+ | 5.31 | Clay Bryant | 236.3 | CHN |
| +029+ | 5 | Carl Hubbell | 179 | SFN |
| +030+ | 4.85 | Russ Bauers | 208.7 | PIT |
| +031+ | 4.84 | Charlie Root | 142.3 | CHN |
| +033+ | 4.82 | Bill McGee | 197 | SLN |
| +034+ | 4.76 | Dutch Leonard | 213.3 | MIN |
| +044+ | 4.12 | Ira Hutchinson | 132.7 | ATL |
| +045+ | 4.11 | Bob Klinger | 136.7 | PIT |
| +047+ | 3.74 | Jim Tobin | 212.3 | PIT |
| +049+ | 3.55 | Jim Turner | 239.3 | ATL |
| +051+ | 3.37 | Lefty Gomez | 210 | NYA |
| +054+ | 3.09 | Johnny Rigney | 143 | CHA |
| +055+ | 3.07 | Lon Warneke | 187.7 | SLN |
| +056+ | 3.05 | Bob Weiland | 215.3 | SLN |
| +058+ | 2.92 | Al Benton | 76 | DET |
| +061+ | 2.76 | Cy Blanton | 163.7 | PIT |
| +062+ | 2.74 | Ted Lyons | 168.7 | CHA |
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