| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lou Fette | ATL | 7.02 | 193907080_PHI_ATL |
| Lefty Grove | BOS | 5.15 | 193907091_BOS_NYA |
| Tommy Bridges | DET | 2.89 | 193907080_DET_CHA |
| Lefty Gomez | NYA | 2.54 | 193907091_BOS_NYA |
| Bucky Walters | CIN | 1.97 | 193907090_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -4.58 | 193907092_PHI_ATL |
| Vern Kennedy | BAL | -2.98 | 193907081_CLE_BAL |
| Nels Potter | OAK | -1.17 | 193907091_MIN_OAK |
| Johnny Rigney | CHA | -0.86 | 193907092_DET_CHA |
| Gene Lillard | CHN | -0.83 | 193907090_CHN_CIN |
Based on accumulated WAA for this season up to 1939-07-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.13 | Bucky Walters | 151.3 | CIN |
| +002+ | 6.05 | Bob Feller | 149 | CLE |
| +003+ | 5.59 | Tommy Bridges | 118.7 | DET |
| +004+ | 5.42 | Lou Fette | 100 | ATL |
| +008+ | 4.72 | Whit Wyatt | 98.3 | LAN |
| +010+ | 4.57 | Red Ruffing | 117 | NYA |
| +016+ | 4.02 | Mace Brown | 86.3 | PIT |
| +017+ | 3.89 | Atley Donald | 87.7 | NYA |
| +021+ | 3.45 | Bump Hadley | 81.3 | NYA |
| +022+ | 3.34 | Lefty Grove | 102 | BOS |
| +024+ | 3.2 | Paul Derringer | 134.7 | CIN |
| +028+ | 2.83 | Bobo Newsom | 142.7 | TOT |
| +032+ | 2.72 | Curt Davis | 125.3 | SLN |
| +034+ | 2.64 | Lefty Gomez | 96 | NYA |
| +035+ | 2.58 | Bill Lohrman | 86 | SFN |
| +036+ | 2.53 | Whitey Moore | 98.7 | CIN |
| +039+ | 2.27 | Bob Klinger | 126.7 | PIT |
| +040+ | 2.26 | Lon Warneke | 104.3 | SLN |
| +043+ | 2.2 | Hugh Casey | 78 | LAN |
| +045+ | 2.14 | Claude Passeau | 127 | TOT |
| +046+ | 2.01 | Bill Posedel | 101.7 | ATL |
| +049+ | 1.91 | Ted Lyons | 91 | CHA |
| +050+ | 1.9 | Bill Swift | 51.3 | PIT |
| +052+ | 1.85 | Dutch Leonard | 121.3 | MIN |
| +051+ | 1.85 | Milt Shoffner | 89.3 | ATL |
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