| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 6.24 | 193806160_PIT_SFN |
| Bill Lee | CHN | 5.69 | 193806171_CHN_ATL |
| Danny MacFayden | ATL | 5.21 | 193806150_CHN_ATL |
| Johnny Allen | CLE | 3.93 | 193806170_OAK_CLE |
| Van Mungo | LAN | 1.96 | 193806171_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wes Ferrell | MIN | -2.55 | 193806171_MIN_DET |
| Jack Knott | CHA | -1.23 | 193806170_BOS_CHA |
| Bud Thomas | OAK | -1.1 | 193806160_OAK_DET |
| Earl Whitehill | CLE | -1.01 | 193806150_MIN_CLE |
| Oral Hildebrand | BAL | -0.98 | 193806150_BOS_BAL |
Based on accumulated WAA for this season up to 1938-06-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.05 | Bill Lee | 106.3 | CHN |
| +005+ | 4.54 | Paul Derringer | 111 | CIN |
| +006+ | 4.24 | Lefty Grove | 105.7 | BOS |
| +007+ | 4.22 | Johnny Vander Meer | 92.7 | CIN |
| +009+ | 3.71 | Bob Feller | 92 | CLE |
| +011+ | 3.46 | Carl Hubbell | 88 | SFN |
| +013+ | 3.14 | Cliff Melton | 106 | SFN |
| +015+ | 3.12 | Red Ruffing | 84 | NYA |
| +016+ | 3.01 | Danny MacFayden | 87.3 | ATL |
| +019+ | 2.82 | Jack Wilson | 81.3 | BOS |
| +020+ | 2.79 | Johnny Allen | 99.7 | CLE |
| +022+ | 2.7 | Bill McGee | 82 | SLN |
| +023+ | 2.55 | Hal Schumacher | 87.3 | SFN |
| +024+ | 2.52 | Bob Klinger | 63.7 | PIT |
| +025+ | 2.52 | Lynn Nelson | 81 | OAK |
| +026+ | 2.49 | Tot Pressnell | 81.7 | LAN |
| +028+ | 2.39 | Bill Swift | 62.3 | PIT |
| +033+ | 2.05 | Monty Stratton | 47.3 | CHA |
| +035+ | 1.91 | Dizzy Dean | 25.7 | CHN |
| +037+ | 1.8 | Freddie Fitzsimmons | 72.7 | LAN |
| +039+ | 1.76 | Buck Ross | 50.7 | OAK |
| +040+ | 1.75 | Jim Weaver | 62.7 | TOT |
| +041+ | 1.74 | Larry French | 98.3 | CHN |
| +043+ | 1.66 | George Caster | 95.3 | OAK |
| +048+ | 1.6 | Milt Shoffner | 75 | ATL |
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