| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Chase | MIN | -3.16 | 193809020_MIN_OAK |
| Nels Potter | OAK | -2.9 | 193809020_MIN_OAK |
| Russ Van Atta | BAL | -2.67 | 193809042_CLE_BAL |
| Hugh Mulcahy | PHI | -1.33 | 193809041_PHI_ATL |
| Tex Carleton | CHN | -1.32 | 193809032_CHN_CIN |
Based on accumulated WAA for this season up to 1938-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 7.57 | Paul Derringer | 260 | CIN |
| +012+ | 6.77 | Lou Fette | 209 | ATL |
| +013+ | 6.7 | Red Ruffing | 215 | NYA |
| +015+ | 6.63 | Danny MacFayden | 176 | ATL |
| +019+ | 6.28 | Bill Lee | 235.3 | CHN |
| +021+ | 5.8 | Bill McGee | 184 | SLN |
| +024+ | 5.42 | Freddie Fitzsimmons | 167.7 | LAN |
| +025+ | 5.31 | Russ Bauers | 203.7 | PIT |
| +028+ | 5.18 | Carl Hubbell | 179 | SFN |
| +030+ | 4.94 | Thornton Lee | 203.3 | CHA |
| +036+ | 4.42 | Charlie Root | 128.3 | CHN |
| +037+ | 4.33 | Dutch Leonard | 188.3 | MIN |
| +039+ | 4.2 | Clay Bryant | 210.3 | CHN |
| +045+ | 3.8 | Jim Tobin | 199 | PIT |
| +047+ | 3.64 | Ted Lyons | 161.7 | CHA |
| +048+ | 3.58 | Jim Turner | 223.3 | ATL |
| +049+ | 3.57 | Bob Weiland | 204 | SLN |
| +050+ | 3.3 | Bob Klinger | 127.7 | PIT |
| +051+ | 3.3 | Dick Errickson | 98.3 | ATL |
| +055+ | 3.12 | Bill Swift | 123.7 | PIT |
| +054+ | 3.12 | Dizzy Dean | 60.7 | CHN |
| +057+ | 2.84 | Johnny Rigney | 127 | CHA |
| +058+ | 2.81 | Larry French | 188 | CHN |
| +059+ | 2.8 | Bill Lohrman | 117.7 | SFN |
| +060+ | 2.76 | Ira Hutchinson | 114 | ATL |
_