| Starter | Tm | Tier | Game |
|---|---|---|---|
| Carl Hubbell | SFN | 7.18 | 193806040_SFN_CIN |
| Lefty Grove | BOS | 5.86 | 193806040_DET_BOS |
| Johnny Allen | CLE | 5.48 | 193806030_CLE_OAK |
| Danny MacFayden | ATL | 5.28 | 193806051_ATL_SLN |
| Red Ruffing | NYA | 4.67 | 193806030_DET_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Chief Hogsett | MIN | -2.76 | 193806040_CLE_MIN |
| Bud Thomas | OAK | -1.18 | 193806030_CLE_OAK |
| Hugh Mulcahy | PHI | -1.14 | 193806050_PHI_CHN |
| Mel Harder | CLE | -0.93 | 193806050_CLE_MIN |
| Ray Harrell | SLN | -0.56 | 193806052_ATL_SLN |
Based on accumulated WAA for this season up to 1938-06-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.97 | Paul Derringer | 93 | CIN |
| +006+ | 3.66 | Red Ruffing | 68.3 | NYA |
| +005+ | 3.66 | Bob Feller | 74 | CLE |
| +008+ | 3.16 | Bill Lee | 82.3 | CHN |
| +009+ | 3.11 | Carl Hubbell | 65 | SFN |
| +010+ | 3.05 | Lefty Grove | 90.3 | BOS |
| +012+ | 2.63 | Tot Pressnell | 75.3 | LAN |
| +013+ | 2.51 | Johnny Allen | 83.7 | CLE |
| +014+ | 2.44 | Bill McGee | 64.3 | SLN |
| +015+ | 2.41 | Larry French | 83.3 | CHN |
| +016+ | 2.4 | Johnny Vander Meer | 74.7 | CIN |
| +017+ | 2.38 | Cliff Melton | 83 | SFN |
| +025+ | 2.03 | Vern Kennedy | 85 | DET |
| +026+ | 1.96 | Dutch Leonard | 72.7 | MIN |
| +028+ | 1.88 | Boots Poffenberger | 57 | DET |
| +029+ | 1.86 | Dizzy Dean | 25.7 | CHN |
| +030+ | 1.85 | Lynn Nelson | 72 | OAK |
| +032+ | 1.78 | Danny MacFayden | 70.3 | ATL |
| +033+ | 1.74 | Bob Klinger | 43.3 | PIT |
| +035+ | 1.63 | George Caster | 74 | OAK |
| +038+ | 1.6 | Milt Shoffner | 68.3 | ATL |
| +042+ | 1.47 | Lou Fette | 67 | ATL |
| +043+ | 1.43 | Spud Chandler | 46 | NYA |
| +044+ | 1.42 | Monty Stratton | 28.7 | CHA |
| +045+ | 1.41 | Jack Wilson | 61.7 | BOS |
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