| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 4.63 | 193808211_PIT_CHN |
| Paul Derringer | CIN | 4.28 | 193808220_CIN_SLN |
| Lou Fette | ATL | 3.97 | 193808232_ATL_PIT |
| Red Ruffing | NYA | 3.12 | 193808212_NYA_OAK |
| Russ Bauers | PIT | 2.31 | 193808212_PIT_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wes Ferrell | NYA | -4.31 | 193808231_CHA_NYA |
| Bobo Newsom | BAL | -3.52 | 193808210_BAL_DET |
| Tex Carleton | CHN | -1.43 | 193808212_PIT_CHN |
| Max Butcher | PHI | -1.36 | 193808210_PHI_SFN |
| Nels Potter | OAK | -1.3 | 193808211_NYA_OAK |
Based on accumulated WAA for this season up to 1938-08-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 7.05 | Paul Derringer | 234 | CIN |
| +006+ | 6.4 | Bill Lee | 216.3 | CHN |
| +007+ | 6.34 | Danny MacFayden | 155 | ATL |
| +009+ | 6.29 | Lou Fette | 192.7 | ATL |
| +016+ | 5.97 | Bill McGee | 167.3 | SLN |
| +018+ | 5.47 | Johnny Vander Meer | 180 | CIN |
| +019+ | 5.36 | Red Ruffing | 188 | NYA |
| +022+ | 4.99 | Carl Hubbell | 179 | SFN |
| +024+ | 4.76 | Freddie Fitzsimmons | 154.7 | LAN |
| +026+ | 4.58 | Dutch Leonard | 179.3 | MIN |
| +028+ | 4.41 | Lefty Grove | 157.7 | BOS |
| +033+ | 3.96 | Russ Bauers | 180.3 | PIT |
| +034+ | 3.96 | Thornton Lee | 185 | CHA |
| +036+ | 3.87 | Jim Tobin | 183.7 | PIT |
| +041+ | 3.58 | Lon Warneke | 158 | SLN |
| +043+ | 3.54 | Bill Lohrman | 105.3 | SFN |
| +044+ | 3.54 | Charlie Root | 107.3 | CHN |
| +045+ | 3.47 | Tot Pressnell | 169 | LAN |
| +049+ | 3.16 | Ira Hutchinson | 106 | ATL |
| +050+ | 3.01 | Bob Weiland | 186.3 | SLN |
| +051+ | 3.01 | Ted Lyons | 152.7 | CHA |
| +052+ | 3 | Dizzy Dean | 59.7 | CHN |
| +053+ | 2.92 | Clay Bryant | 187.7 | CHN |
| +055+ | 2.9 | Lefty Gomez | 178 | NYA |
| +056+ | 2.85 | Bill Swift | 121.7 | PIT |
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