| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 6.45 | 193806270_BOS_CLE |
| Johnny Allen | CLE | 5.21 | 193806280_DET_CLE |
| Carl Hubbell | SFN | 3.97 | 193806260_CHN_SFN |
| Paul Derringer | CIN | 2.64 | 193806262_CIN_PHI |
| Russ Bauers | PIT | 1.48 | 193806280_CIN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Walkup | BAL | -3.61 | 193806280_CHA_BAL |
| Wes Ferrell | MIN | -3.08 | 193806262_MIN_BAL |
| Wayne LaMaster | PHI | -2.13 | 193806262_CIN_PHI |
| Vito Tamulis | LAN | -0.88 | 193806260_SLN_LAN |
| Vern Kennedy | DET | -0.62 | 193806260_NYA_DET |
Based on accumulated WAA for this season up to 1938-06-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 5.09 | Johnny Vander Meer | 118.3 | CIN |
| +006+ | 4.81 | Bill Lee | 117 | CHN |
| +008+ | 4.11 | Bob Feller | 110 | CLE |
| +010+ | 3.88 | Lefty Grove | 127.7 | BOS |
| +011+ | 3.76 | Paul Derringer | 132.7 | CIN |
| +012+ | 3.61 | Tot Pressnell | 99.7 | LAN |
| +013+ | 3.6 | Carl Hubbell | 104 | SFN |
| +014+ | 3.58 | Bill McGee | 93 | SLN |
| +015+ | 3.45 | Johnny Allen | 116 | CLE |
| +018+ | 3.39 | Lynn Nelson | 99 | OAK |
| +020+ | 3.34 | Cliff Melton | 118.3 | SFN |
| +023+ | 3.03 | Danny MacFayden | 87.3 | ATL |
| +024+ | 3 | Jack Wilson | 82.3 | BOS |
| +025+ | 2.83 | Freddie Fitzsimmons | 89.7 | LAN |
| +029+ | 2.64 | Clay Bryant | 95.3 | CHN |
| +030+ | 2.6 | Bob Klinger | 65.7 | PIT |
| +033+ | 2.46 | Monty Stratton | 57.7 | CHA |
| +034+ | 2.41 | Dutch Leonard | 100.3 | MIN |
| +038+ | 2.19 | Lou Fette | 91.7 | ATL |
| +040+ | 2.18 | Ted Lyons | 75.7 | CHA |
| +041+ | 2.16 | Red Ruffing | 99.3 | NYA |
| +044+ | 2.09 | Larry French | 108.7 | CHN |
| +045+ | 1.95 | Dizzy Dean | 25.7 | CHN |
| +047+ | 1.93 | George Caster | 107.3 | OAK |
| +049+ | 1.89 | Bill Swift | 67 | PIT |
_