| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Allen | CLE | 4.78 | 193807031_CLE_CHA |
| Carl Hubbell | SFN | 4.56 | 193807020_SFN_LAN |
| Bill Lee | CHN | 4.44 | 193807030_CHN_CIN |
| Red Ruffing | NYA | 2.92 | 193807041_NYA_MIN |
| Johnny Vander Meer | CIN | 2.31 | 193807030_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Chief Hogsett | MIN | -3.75 | 193807042_NYA_MIN |
| Jim Walkup | BAL | -3.75 | 193807041_BAL_CHA |
| Bill Hallahan | PHI | -1.4 | 193807032_PHI_LAN |
| Bucky Walters | CIN | -1.26 | 193807042_PIT_CIN |
| Vern Kennedy | DET | -1.2 | 193807031_DET_BAL |
Based on accumulated WAA for this season up to 1938-07-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.65 | Johnny Vander Meer | 126.3 | CIN |
| +008+ | 4.39 | Bill Lee | 128 | CHN |
| +009+ | 4.24 | Carl Hubbell | 113 | SFN |
| +010+ | 4.15 | Cliff Melton | 133.3 | SFN |
| +011+ | 3.9 | Johnny Allen | 127 | CLE |
| +014+ | 3.74 | Paul Derringer | 139 | CIN |
| +016+ | 3.65 | Lefty Grove | 136.7 | BOS |
| +018+ | 3.28 | Bill McGee | 101 | SLN |
| +020+ | 3.22 | Bob Klinger | 74.7 | PIT |
| +023+ | 3.06 | Tot Pressnell | 113.3 | LAN |
| +024+ | 3.04 | Danny MacFayden | 87.3 | ATL |
| +026+ | 2.86 | Bob Feller | 125 | CLE |
| +027+ | 2.85 | Bill Swift | 81.7 | PIT |
| +031+ | 2.65 | Jack Wilson | 85.7 | BOS |
| +032+ | 2.62 | Hal Schumacher | 115.7 | SFN |
| +033+ | 2.61 | Lou Fette | 106.7 | ATL |
| +034+ | 2.61 | Ted Lyons | 84.7 | CHA |
| +035+ | 2.58 | Clay Bryant | 112 | CHN |
| +036+ | 2.56 | Larry French | 116 | CHN |
| +037+ | 2.36 | Red Ruffing | 115 | NYA |
| +038+ | 2.34 | Freddie Fitzsimmons | 97.7 | LAN |
| +039+ | 2.33 | Jim Bagby | 84.7 | BOS |
| +040+ | 2.27 | Monty Stratton | 66.7 | CHA |
| +043+ | 2.2 | Peaches Davis | 89 | CIN |
| +047+ | 2.08 | Ira Hutchinson | 62.3 | ATL |
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