| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 4.94 | 193808120_CHN_PIT |
| Lefty Grove | BOS | 4.45 | 193808110_BOS_OAK |
| Carl Hubbell | SFN | 3.57 | 193808131_SFN_PHI |
| Red Ruffing | NYA | 3.36 | 193808121_OAK_NYA |
| Johnny Allen | CLE | 1.82 | 193808132_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -5.62 | 193808111_CLE_BAL |
| Max Butcher | PHI | -1.93 | 193808132_SFN_PHI |
| Lynn Nelson | OAK | -0.83 | 193808121_OAK_NYA |
| Roxie Lawson | DET | -0.75 | 193808110_DET_CHA |
| Bucky Walters | CIN | -0.73 | 193808120_SLN_CIN |
Based on accumulated WAA for this season up to 1938-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.48 | Bill Lee | 199.7 | CHN |
| +006+ | 6.26 | Paul Derringer | 207 | CIN |
| +010+ | 5.57 | Carl Hubbell | 174 | SFN |
| +013+ | 5.47 | Johnny Vander Meer | 180 | CIN |
| +016+ | 5.28 | Danny MacFayden | 137 | ATL |
| +017+ | 5.14 | Lou Fette | 165 | ATL |
| +018+ | 4.97 | Bill McGee | 148 | SLN |
| +023+ | 4.49 | Lefty Grove | 157.7 | BOS |
| +026+ | 4.24 | Red Ruffing | 170 | NYA |
| +027+ | 4.16 | Clay Bryant | 174.3 | CHN |
| +030+ | 4.01 | Larry French | 177 | CHN |
| +032+ | 3.8 | Dutch Leonard | 160 | MIN |
| +035+ | 3.59 | Russ Bauers | 165.3 | PIT |
| +036+ | 3.55 | Lon Warneke | 140 | SLN |
| +039+ | 3.4 | Jim Tobin | 163.3 | PIT |
| +040+ | 3.33 | Bob Weiland | 163.3 | SLN |
| +043+ | 3.15 | Tot Pressnell | 159.3 | LAN |
| +042+ | 3.15 | Peaches Davis | 139.7 | CIN |
| +044+ | 3.05 | Charlie Root | 85.3 | CHN |
| +046+ | 2.98 | Freddie Fitzsimmons | 136.7 | LAN |
| +048+ | 2.9 | Dizzy Dean | 54.3 | CHN |
| +049+ | 2.88 | Bill Lohrman | 88 | SFN |
| +052+ | 2.74 | Bob Klinger | 118 | PIT |
| +054+ | 2.72 | Johnny Allen | 165.3 | CLE |
| +055+ | 2.72 | Thornton Lee | 167 | CHA |
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