| Starter | Tm | Tier | Game |
|---|---|---|---|
| Danny MacFayden | ATL | 5.02 | 193808251_ATL_CIN |
| Bill Lee | CHN | 4.24 | 193808251_LAN_CHN |
| Red Ruffing | NYA | 3.36 | 193808252_CLE_NYA |
| Thornton Lee | CHA | 1.81 | 193808231_CHA_NYA |
| Russ Bauers | PIT | 1.75 | 193808240_ATL_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wes Ferrell | NYA | -4.31 | 193808231_CHA_NYA |
| Frank Gabler | CHA | -2.43 | 193808242_CHA_NYA |
| Al Williams | OAK | -2.42 | 193808251_BAL_OAK |
| Bobo Newsom | BAL | -2.18 | 193808251_BAL_OAK |
| Hugh Mulcahy | PHI | -1.66 | 193808240_PHI_CIN |
Based on accumulated WAA for this season up to 1938-08-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 6.98 | Paul Derringer | 234 | CIN |
| +006+ | 6.88 | Bill Lee | 225.3 | CHN |
| +010+ | 6.25 | Lou Fette | 192.7 | ATL |
| +016+ | 5.94 | Bill McGee | 167.3 | SLN |
| +017+ | 5.86 | Danny MacFayden | 159 | ATL |
| +018+ | 5.83 | Red Ruffing | 197 | NYA |
| +019+ | 5.42 | Johnny Vander Meer | 180 | CIN |
| +023+ | 4.97 | Carl Hubbell | 179 | SFN |
| +025+ | 4.8 | Freddie Fitzsimmons | 154.7 | LAN |
| +028+ | 4.58 | Dutch Leonard | 179.3 | MIN |
| +032+ | 4.39 | Russ Bauers | 189.3 | PIT |
| +031+ | 4.39 | Lefty Grove | 157.7 | BOS |
| +035+ | 4.14 | Thornton Lee | 186.3 | CHA |
| +039+ | 3.84 | Jim Tobin | 183.7 | PIT |
| +043+ | 3.58 | Lefty Gomez | 187 | NYA |
| +044+ | 3.54 | Charlie Root | 107.3 | CHN |
| +048+ | 3.05 | Ted Lyons | 152.7 | CHA |
| +049+ | 3.04 | Jack Wilson | 154.7 | BOS |
| +051+ | 3 | Bob Weiland | 188.7 | SLN |
| +050+ | 3 | Dizzy Dean | 59.7 | CHN |
| +052+ | 2.95 | Lon Warneke | 164.7 | SLN |
| +053+ | 2.92 | Clay Bryant | 187.7 | CHN |
| +055+ | 2.83 | Larry French | 184.7 | CHN |
| +054+ | 2.83 | Bill Swift | 121.7 | PIT |
| +056+ | 2.67 | Ira Hutchinson | 114 | ATL |
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