| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 6.53 | 193808030_CHN_SFN |
| Danny MacFayden | ATL | 5.3 | 193808040_PIT_ATL |
| Lefty Grove | BOS | 4.67 | 193808050_BOS_DET |
| Paul Derringer | CIN | 3.02 | 193808050_CIN_LAN |
| Red Ruffing | NYA | 2.77 | 193808030_NYA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -4.46 | 193808030_MIN_BAL |
| Harry Kelley | MIN | -2.7 | 193808040_MIN_BAL |
| Hugh Mulcahy | PHI | -2.5 | 193808050_SLN_PHI |
| Al Williams | OAK | -1.62 | 193808050_OAK_BAL |
| Earl Whitehill | CLE | -0.9 | 193808032_BOS_CLE |
Based on accumulated WAA for this season up to 1938-08-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.43 | Johnny Vander Meer | 171 | CIN |
| +005+ | 6.27 | Bill Lee | 185.7 | CHN |
| +007+ | 6.05 | Paul Derringer | 199 | CIN |
| +010+ | 5.55 | Danny MacFayden | 130 | ATL |
| +012+ | 5.17 | Carl Hubbell | 158.7 | SFN |
| +017+ | 4.72 | Clay Bryant | 157.3 | CHN |
| +019+ | 4.34 | Lefty Grove | 155.7 | BOS |
| +021+ | 4.14 | Lou Fette | 156 | ATL |
| +026+ | 3.92 | Bill McGee | 133 | SLN |
| +028+ | 3.75 | Thornton Lee | 148.7 | CHA |
| +030+ | 3.69 | Ted Lyons | 118.7 | CHA |
| +032+ | 3.55 | Johnny Allen | 150 | CLE |
| +033+ | 3.5 | Peaches Davis | 128.7 | CIN |
| +035+ | 3.23 | Jim Tobin | 148 | PIT |
| +036+ | 3.21 | Red Ruffing | 152 | NYA |
| +037+ | 3.13 | Bob Weiland | 155 | SLN |
| +039+ | 3.06 | Dizzy Dean | 47.7 | CHN |
| +043+ | 2.85 | Charlie Root | 83.7 | CHN |
| +044+ | 2.83 | Larry French | 163.7 | CHN |
| +046+ | 2.73 | Jack Wilson | 117.3 | BOS |
| +048+ | 2.7 | Tot Pressnell | 149.7 | LAN |
| +049+ | 2.66 | Lon Warneke | 133 | SLN |
| +050+ | 2.64 | Bob Klinger | 111.7 | PIT |
| +052+ | 2.58 | Cy Blanton | 111 | PIT |
| +054+ | 2.57 | Cliff Melton | 166.3 | SFN |
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