| Starter | Tm | Tier | Game |
|---|---|---|---|
| Red Ruffing | NYA | 2.69 | 193807121_BAL_NYA |
| Paul Derringer | CIN | 2.31 | 193807130_SFN_CIN |
| Hal Schumacher | SFN | 1.97 | 193807120_SFN_LAN |
| Bob Feller | CLE | 1.79 | 193807130_CLE_MIN |
| Jim Turner | ATL | 1.69 | 193807130_ATL_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Chase | MIN | -1.69 | 193807120_CLE_MIN |
| Oral Hildebrand | BAL | -1.53 | 193807121_BAL_NYA |
| Vern Kennedy | DET | -0.65 | 193807131_DET_BOS |
| Jack Knott | CHA | -0.16 | 193807130_CHA_OAK |
| Vito Tamulis | LAN | -0.09 | 193807130_LAN_PIT |
Based on accumulated WAA for this season up to 1938-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.69 | Johnny Vander Meer | 135.3 | CIN |
| +007+ | 4.82 | Cliff Melton | 142.3 | SFN |
| +010+ | 4.57 | Bill Lee | 135 | CHN |
| +011+ | 4.43 | Paul Derringer | 155 | CIN |
| +013+ | 4.06 | Lefty Grove | 145.7 | BOS |
| +016+ | 3.86 | Carl Hubbell | 116 | SFN |
| +017+ | 3.66 | Lou Fette | 115.7 | ATL |
| +019+ | 3.45 | Johnny Allen | 134 | CLE |
| +021+ | 3.37 | Bob Klinger | 86 | PIT |
| +024+ | 3.17 | Danny MacFayden | 87.3 | ATL |
| +025+ | 3.14 | Bob Feller | 141.3 | CLE |
| +026+ | 3.13 | Bill McGee | 111 | SLN |
| +027+ | 3.07 | Bill Swift | 89.3 | PIT |
| +028+ | 3.04 | Tot Pressnell | 123.3 | LAN |
| +032+ | 2.78 | Ted Lyons | 93.7 | CHA |
| +033+ | 2.77 | Red Ruffing | 124 | NYA |
| +040+ | 2.5 | Larry French | 127 | CHN |
| +041+ | 2.39 | Hal Schumacher | 116 | SFN |
| +042+ | 2.38 | George Caster | 134.7 | OAK |
| +043+ | 2.37 | Russ Bauers | 123 | PIT |
| +047+ | 2.21 | Dutch Leonard | 122.3 | MIN |
| +048+ | 2.21 | Freddie Fitzsimmons | 102.3 | LAN |
| +049+ | 2.19 | Jack Wilson | 86.7 | BOS |
| +051+ | 2.17 | Ira Hutchinson | 62.3 | ATL |
| +052+ | 2.15 | Peaches Davis | 98 | CIN |
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