| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bill Lee | CHN | 5.17 | 193808161_SLN_CHN |
| Danny MacFayden | ATL | 4.65 | 193808141_LAN_ATL |
| Paul Derringer | CIN | 3.95 | 193808141_SLN_CIN |
| Red Ruffing | NYA | 3.11 | 193808162_NYA_MIN |
| Bill McGee | SLN | 1.86 | 193808161_SLN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -5.69 | 193808141_DET_BAL |
| Ken Chase | MIN | -1.93 | 193808161_NYA_MIN |
| Hugh Mulcahy | PHI | -1.76 | 193808141_SFN_PHI |
| Elden Auker | DET | -1.4 | 193808142_DET_BAL |
| Bud Thomas | OAK | -0.86 | 193808141_OAK_NYA |
Based on accumulated WAA for this season up to 1938-08-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.44 | Bill Lee | 207.7 | CHN |
| +006+ | 6.36 | Paul Derringer | 216 | CIN |
| +009+ | 5.96 | Danny MacFayden | 146 | ATL |
| +011+ | 5.59 | Carl Hubbell | 174 | SFN |
| +014+ | 5.51 | Johnny Vander Meer | 180 | CIN |
| +018+ | 5.19 | Lou Fette | 174 | ATL |
| +021+ | 5.03 | Bill McGee | 157 | SLN |
| +023+ | 4.74 | Red Ruffing | 179 | NYA |
| +024+ | 4.51 | Lefty Grove | 157.7 | BOS |
| +025+ | 4.4 | Russ Bauers | 173.3 | PIT |
| +032+ | 3.91 | Freddie Fitzsimmons | 145.7 | LAN |
| +033+ | 3.81 | Dutch Leonard | 160 | MIN |
| +035+ | 3.62 | Jim Tobin | 169.7 | PIT |
| +036+ | 3.61 | Larry French | 179.3 | CHN |
| +037+ | 3.61 | Lon Warneke | 149 | SLN |
| +040+ | 3.33 | Charlie Root | 92.3 | CHN |
| +042+ | 3.18 | Tot Pressnell | 159.3 | LAN |
| +041+ | 3.18 | Clay Bryant | 181.3 | CHN |
| +044+ | 3.1 | Bob Weiland | 169.3 | SLN |
| +047+ | 2.9 | Dizzy Dean | 54.3 | CHN |
| +048+ | 2.88 | Bill Lohrman | 96.3 | SFN |
| +050+ | 2.79 | Cy Blanton | 122.7 | PIT |
| +051+ | 2.75 | Bob Klinger | 118 | PIT |
| +054+ | 2.73 | Johnny Allen | 165.3 | CLE |
| +055+ | 2.73 | Thornton Lee | 167 | CHA |
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