| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Chase | MIN | -3.16 | 193809020_MIN_OAK |
| Nels Potter | OAK | -2.9 | 193809020_MIN_OAK |
| Bobo Newsom | BAL | -1.75 | 193809010_BAL_BOS |
| Slick Coffman | DET | -1.38 | 193809010_DET_NYA |
| Tex Carleton | CHN | -1.32 | 193809032_CHN_CIN |
Based on accumulated WAA for this season up to 1938-09-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 7.66 | Paul Derringer | 260 | CIN |
| +009+ | 6.81 | Lou Fette | 209 | ATL |
| +010+ | 6.73 | Red Ruffing | 215 | NYA |
| +012+ | 6.66 | Danny MacFayden | 176 | ATL |
| +018+ | 6.36 | Bill Lee | 235.3 | CHN |
| +020+ | 5.81 | Bill McGee | 184 | SLN |
| +023+ | 5.45 | Freddie Fitzsimmons | 167.7 | LAN |
| +026+ | 5.2 | Carl Hubbell | 179 | SFN |
| +029+ | 5 | Thornton Lee | 203.3 | CHA |
| +031+ | 4.66 | Russ Bauers | 194.7 | PIT |
| +036+ | 4.35 | Dutch Leonard | 188.3 | MIN |
| +037+ | 4.28 | Clay Bryant | 210.3 | CHN |
| +043+ | 3.83 | Jim Tobin | 199 | PIT |
| +045+ | 3.69 | Ted Lyons | 161.7 | CHA |
| +046+ | 3.59 | Bob Weiland | 204 | SLN |
| +047+ | 3.57 | Charlie Root | 117.3 | CHN |
| +049+ | 3.32 | Bob Klinger | 127.7 | PIT |
| +054+ | 3.14 | Bill Swift | 123.7 | PIT |
| +053+ | 3.14 | Jim Turner | 214.3 | ATL |
| +052+ | 3.14 | Dizzy Dean | 60.7 | CHN |
| +056+ | 2.88 | Larry French | 188 | CHN |
| +057+ | 2.81 | Bill Lohrman | 117.7 | SFN |
| +059+ | 2.78 | Ira Hutchinson | 114 | ATL |
| +061+ | 2.69 | Lon Warneke | 173.7 | SLN |
| +062+ | 2.66 | Cy Blanton | 148.7 | PIT |
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