| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 7.2 | 193806140_BOS_BAL |
| Carl Hubbell | SFN | 6.63 | 193806122_SFN_SLN |
| Danny MacFayden | ATL | 5.21 | 193806150_CHN_ATL |
| Red Ruffing | NYA | 5.02 | 193806120_CLE_NYA |
| Bill Lee | CHN | 4.94 | 193806121_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Walkup | BAL | -2.49 | 193806121_BAL_OAK |
| Jimmie DeShong | MIN | -2 | 193806140_MIN_CLE |
| Bud Thomas | OAK | -1.49 | 193806122_BAL_OAK |
| Bill Dietrich | CHA | -1.2 | 193806122_CHA_BOS |
| Earl Whitehill | CLE | -1.01 | 193806150_MIN_CLE |
Based on accumulated WAA for this season up to 1938-06-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 4.54 | Paul Derringer | 111 | CIN |
| +005+ | 4.39 | Bill Lee | 98.3 | CHN |
| +006+ | 4.22 | Johnny Vander Meer | 92.7 | CIN |
| +007+ | 4.22 | Lefty Grove | 105.7 | BOS |
| +008+ | 3.79 | Carl Hubbell | 81 | SFN |
| +011+ | 3.1 | Cliff Melton | 106 | SFN |
| +012+ | 3.09 | Red Ruffing | 84 | NYA |
| +014+ | 2.99 | Bob Feller | 83 | CLE |
| +016+ | 2.97 | Danny MacFayden | 87.3 | ATL |
| +019+ | 2.52 | Hal Schumacher | 87.3 | SFN |
| +020+ | 2.5 | Tot Pressnell | 81.7 | LAN |
| +021+ | 2.46 | Lynn Nelson | 81 | OAK |
| +025+ | 2.38 | Bill McGee | 75 | SLN |
| +027+ | 2.31 | Bill Swift | 55 | PIT |
| +029+ | 2.09 | Jack Wilson | 72.3 | BOS |
| +030+ | 2.08 | Larry French | 98.3 | CHN |
| +031+ | 2.07 | Johnny Allen | 90.7 | CLE |
| +032+ | 2.06 | Bob Klinger | 54.7 | PIT |
| +035+ | 1.97 | Monty Stratton | 38.3 | CHA |
| +036+ | 1.89 | Dizzy Dean | 25.7 | CHN |
| +037+ | 1.81 | Freddie Fitzsimmons | 72.7 | LAN |
| +038+ | 1.75 | Buck Ross | 44.7 | OAK |
| +043+ | 1.59 | George Caster | 95.3 | OAK |
| +044+ | 1.57 | Milt Shoffner | 75 | ATL |
| +052+ | 1.53 | John Whitehead | 61 | CHA |
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