| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 5.56 | 193907211_CIN_LAN |
| Lou Fette | ATL | 5.26 | 193907232_PIT_ATL |
| Bob Feller | CLE | 3.56 | 193907231_MIN_CLE |
| Lefty Gomez | NYA | 2.54 | 193907231_NYA_CHA |
| Mace Brown | PIT | 2.05 | 193907231_PIT_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buck Ross | OAK | -4.75 | 193907230_OAK_DET |
| Roxie Lawson | BAL | -4.16 | 193907232_BOS_BAL |
| Hugh Mulcahy | PHI | -2.94 | 193907231_CIN_PHI |
| Joe Haynes | MIN | -2.15 | 193907210_MIN_CLE |
| Jake Wade | BOS | -0.95 | 193907232_BOS_BAL |
Based on accumulated WAA for this season up to 1939-07-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.69 | Bucky Walters | 178.3 | CIN |
| +004+ | 6 | Bob Feller | 169.3 | CLE |
| +005+ | 5.61 | Red Ruffing | 135 | NYA |
| +006+ | 5.54 | Lou Fette | 111.3 | ATL |
| +011+ | 4.79 | Atley Donald | 104.3 | NYA |
| +012+ | 4.77 | Mace Brown | 105.3 | PIT |
| +014+ | 4.39 | Tommy Bridges | 131.7 | DET |
| +015+ | 4.38 | Bump Hadley | 98.3 | NYA |
| +016+ | 4.36 | Whit Wyatt | 109 | LAN |
| +018+ | 4.19 | Paul Derringer | 158.7 | CIN |
| +022+ | 3.95 | Whitey Moore | 118.7 | CIN |
| +023+ | 3.87 | Lefty Grove | 111 | BOS |
| +026+ | 3.52 | Milt Shoffner | 116.3 | ATL |
| +028+ | 3.45 | Mort Cooper | 101 | SLN |
| +030+ | 3.18 | Bill Posedel | 125.7 | ATL |
| +031+ | 3.15 | Hugh Casey | 98.3 | LAN |
| +032+ | 3.1 | Curt Davis | 148.7 | SLN |
| +034+ | 3.04 | Bob Klinger | 145.7 | PIT |
| +036+ | 2.97 | Danny MacFayden | 125.7 | ATL |
| +037+ | 2.9 | Ted Lyons | 109 | CHA |
| +041+ | 2.77 | Bill Lohrman | 102.3 | SFN |
| +043+ | 2.66 | Claude Passeau | 150.7 | TOT |
| +047+ | 2.47 | Bobo Newsom | 169 | TOT |
| +049+ | 2.34 | Lon Warneke | 110.7 | SLN |
| +052+ | 2.28 | Bill Swift | 71 | PIT |
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