| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 5.74 | 193907250_ATL_CIN |
| Lou Fette | ATL | 5.26 | 193907232_PIT_ATL |
| Lefty Grove | BOS | 3.92 | 193907251_CHA_BOS |
| Bob Feller | CLE | 3.56 | 193907231_MIN_CLE |
| Lefty Gomez | NYA | 2.54 | 193907231_NYA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -4.75 | 193907230_OAK_DET |
| Roxie Lawson | BAL | -4.16 | 193907232_BOS_BAL |
| Johnny Marcum | CHA | -3.39 | 193907252_CHA_BOS |
| Hugh Mulcahy | PHI | -2.94 | 193907231_CIN_PHI |
| Ken Chase | MIN | -1.25 | 193907232_MIN_CLE |
Based on accumulated WAA for this season up to 1939-07-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.37 | Bucky Walters | 187.3 | CIN |
| +004+ | 5.98 | Bob Feller | 169.3 | CLE |
| +006+ | 5.6 | Red Ruffing | 135 | NYA |
| +007+ | 5.55 | Lou Fette | 111.3 | ATL |
| +008+ | 5.48 | Atley Donald | 113.3 | NYA |
| +012+ | 4.74 | Mace Brown | 105.3 | PIT |
| +013+ | 4.54 | Lefty Grove | 120 | BOS |
| +016+ | 4.39 | Tommy Bridges | 131.7 | DET |
| +018+ | 4.37 | Whit Wyatt | 109 | LAN |
| +017+ | 4.37 | Bump Hadley | 98.3 | NYA |
| +022+ | 4.18 | Paul Derringer | 158.7 | CIN |
| +023+ | 3.94 | Whitey Moore | 118.7 | CIN |
| +025+ | 3.79 | Hugh Casey | 107.3 | LAN |
| +027+ | 3.56 | Bill Posedel | 133.7 | ATL |
| +028+ | 3.52 | Milt Shoffner | 116.3 | ATL |
| +030+ | 3.26 | Mort Cooper | 106 | SLN |
| +034+ | 3.11 | Bob Klinger | 146.7 | PIT |
| +035+ | 3 | Curt Davis | 148.7 | SLN |
| +036+ | 2.98 | Danny MacFayden | 125.7 | ATL |
| +038+ | 2.9 | Ted Lyons | 109 | CHA |
| +041+ | 2.7 | Bill Lohrman | 102.3 | SFN |
| +045+ | 2.48 | Bobo Newsom | 169 | TOT |
| +046+ | 2.47 | Claude Passeau | 151 | TOT |
| +048+ | 2.38 | Carl Hubbell | 64.3 | SFN |
| +050+ | 2.32 | Lon Warneke | 117.3 | SLN |
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