| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 4.43 | 193809110_CIN_CHN |
| Danny MacFayden | ATL | 4.11 | 193809111_ATL_PHI |
| Paul Derringer | CIN | 3.81 | 193809110_CIN_CHN |
| Russ Bauers | PIT | 2.59 | 193809100_PIT_SLN |
| Bill McGee | SLN | 2.1 | 193809100_PIT_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lynn Nelson | OAK | -2.83 | 193809100_OAK_BOS |
| Bobo Newsom | BAL | -2.67 | 193809100_BAL_CLE |
| Hugh Mulcahy | PHI | -0.92 | 193809111_ATL_PHI |
| Slick Coffman | DET | -0.91 | 193809112_CHA_DET |
| Bucky Walters | CIN | -0.36 | 193809100_CIN_CHN |
Based on accumulated WAA for this season up to 1938-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 8 | Bill Lee | 254.7 | CHN |
| +008+ | 7.21 | Paul Derringer | 273 | CIN |
| +009+ | 7.11 | Lou Fette | 226 | ATL |
| +020+ | 6.03 | Freddie Fitzsimmons | 176.7 | LAN |
| +022+ | 5.67 | Johnny Vander Meer | 189.3 | CIN |
| +024+ | 5.6 | Clay Bryant | 228.3 | CHN |
| +025+ | 5.59 | Danny MacFayden | 185.3 | ATL |
| +027+ | 5.07 | Red Ruffing | 218.3 | NYA |
| +028+ | 5.04 | Carl Hubbell | 179 | SFN |
| +030+ | 5.01 | Thornton Lee | 209.3 | CHA |
| +031+ | 4.86 | Bill McGee | 197 | SLN |
| +032+ | 4.85 | Russ Bauers | 208.7 | PIT |
| +033+ | 4.73 | Dutch Leonard | 204.3 | MIN |
| +037+ | 4.59 | Charlie Root | 133.3 | CHN |
| +044+ | 4.12 | Bob Klinger | 136.7 | PIT |
| +045+ | 3.75 | Ira Hutchinson | 128.7 | ATL |
| +048+ | 3.4 | Lefty Gomez | 210 | NYA |
| +049+ | 3.28 | Jim Tobin | 203.3 | PIT |
| +053+ | 3.11 | Lon Warneke | 187.7 | SLN |
| +054+ | 3.09 | Bob Weiland | 215.3 | SLN |
| +057+ | 2.94 | Al Benton | 76 | DET |
| +058+ | 2.92 | Jim Turner | 230.3 | ATL |
| +059+ | 2.91 | Bill Swift | 128.7 | PIT |
| +060+ | 2.9 | Bump Hadley | 139.3 | NYA |
| +061+ | 2.78 | Ted Lyons | 168.7 | CHA |
_