| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 6.53 | 193808030_CHN_SFN |
| Carl Hubbell | SFN | 5.64 | 193808020_CHN_SFN |
| Johnny Vander Meer | CIN | 2.8 | 193808020_CIN_PHI |
| Red Ruffing | NYA | 2.77 | 193808030_NYA_DET |
| Cy Blanton | PIT | 2.07 | 193808031_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -4.46 | 193808030_MIN_BAL |
| Wes Ferrell | MIN | -3.98 | 193808020_MIN_BAL |
| Bud Thomas | OAK | -1.26 | 193808031_OAK_CHA |
| Earl Whitehill | CLE | -0.9 | 193808032_BOS_CLE |
| Bill Hallahan | PHI | -0.73 | 193808020_CIN_PHI |
Based on accumulated WAA for this season up to 1938-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.47 | Johnny Vander Meer | 171 | CIN |
| +004+ | 6.31 | Bill Lee | 185.7 | CHN |
| +009+ | 5.41 | Paul Derringer | 190 | CIN |
| +011+ | 5.2 | Carl Hubbell | 158.7 | SFN |
| +013+ | 5.11 | Danny MacFayden | 121 | ATL |
| +017+ | 4.75 | Clay Bryant | 157.3 | CHN |
| +020+ | 4.18 | Lou Fette | 156 | ATL |
| +025+ | 3.95 | Bill McGee | 133 | SLN |
| +029+ | 3.71 | Ted Lyons | 118.7 | CHA |
| +030+ | 3.59 | Johnny Allen | 150 | CLE |
| +031+ | 3.53 | Peaches Davis | 128.7 | CIN |
| +034+ | 3.3 | Thornton Lee | 139.7 | CHA |
| +035+ | 3.24 | Red Ruffing | 152 | NYA |
| +036+ | 3.22 | Jim Tobin | 148 | PIT |
| +037+ | 3.16 | Bob Weiland | 155 | SLN |
| +038+ | 3.07 | Dizzy Dean | 47.7 | CHN |
| +039+ | 3.02 | Bill Lohrman | 73 | SFN |
| +041+ | 2.87 | Charlie Root | 83.7 | CHN |
| +043+ | 2.78 | Jack Wilson | 117.3 | BOS |
| +047+ | 2.7 | Bob Klinger | 103.7 | PIT |
| +048+ | 2.57 | Cy Blanton | 111 | PIT |
| +049+ | 2.57 | Cliff Melton | 159.7 | SFN |
| +050+ | 2.56 | Russ Bauers | 156.3 | PIT |
| +051+ | 2.43 | Freddie Fitzsimmons | 127.7 | LAN |
| +054+ | 2.34 | Dutch Leonard | 142 | MIN |
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