| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Allen | CLE | 5.3 | 193807100_BAL_CLE |
| Lefty Grove | BOS | 4.8 | 193807100_NYA_BOS |
| Bill Lee | CHN | 4.79 | 193807100_CIN_CHN |
| Johnny Vander Meer | CIN | 2.97 | 193807100_CIN_CHN |
| Red Ruffing | NYA | 2.69 | 193807121_BAL_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wayne LaMaster | PHI | -1.8 | 193807102_LAN_PHI |
| Bobo Newsom | BAL | -1.73 | 193807100_BAL_CLE |
| Ken Chase | MIN | -1.69 | 193807120_CLE_MIN |
| Bud Thomas | OAK | -1.1 | 193807101_OAK_MIN |
| Max Butcher | LAN | -0.97 | 193807102_LAN_PHI |
Based on accumulated WAA for this season up to 1938-07-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.61 | Johnny Vander Meer | 135.3 | CIN |
| +008+ | 4.74 | Cliff Melton | 142.3 | SFN |
| +009+ | 4.52 | Bill Lee | 135 | CHN |
| +012+ | 4.02 | Lefty Grove | 145.7 | BOS |
| +014+ | 3.79 | Carl Hubbell | 116 | SFN |
| +015+ | 3.77 | Paul Derringer | 147 | CIN |
| +017+ | 3.61 | Lou Fette | 115.7 | ATL |
| +019+ | 3.42 | Bill McGee | 108 | SLN |
| +020+ | 3.39 | Johnny Allen | 134 | CLE |
| +021+ | 3.34 | Bob Klinger | 86 | PIT |
| +024+ | 3.13 | Danny MacFayden | 87.3 | ATL |
| +025+ | 3.11 | Tot Pressnell | 120.3 | LAN |
| +027+ | 3.04 | Bob Feller | 132.7 | CLE |
| +028+ | 3.03 | Bill Swift | 89.3 | PIT |
| +033+ | 2.74 | Red Ruffing | 124 | NYA |
| +034+ | 2.72 | Ted Lyons | 93.7 | CHA |
| +037+ | 2.45 | Larry French | 127 | CHN |
| +040+ | 2.32 | Hal Schumacher | 116 | SFN |
| +042+ | 2.27 | Russ Bauers | 116 | PIT |
| +044+ | 2.17 | Jack Wilson | 86.7 | BOS |
| +047+ | 2.16 | Dutch Leonard | 122.3 | MIN |
| +045+ | 2.16 | Freddie Fitzsimmons | 102.3 | LAN |
| +048+ | 2.14 | Ira Hutchinson | 62.3 | ATL |
| +049+ | 2.09 | Peaches Davis | 98 | CIN |
| +050+ | 2.01 | Clay Bryant | 116.3 | CHN |
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