| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Grove | BOS | 5.15 | 193907091_BOS_NYA |
| Bob Feller | CLE | 4.38 | 193907130_BOS_CLE |
| Bucky Walters | CIN | 2.9 | 193907130_CIN_SFN |
| Danny MacFayden | ATL | 2.76 | 193907132_SLN_ATL |
| Lefty Gomez | NYA | 2.54 | 193907091_BOS_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -4.86 | 193907130_CHN_PHI |
| Vern Kennedy | BAL | -2.76 | 193907130_MIN_BAL |
| Nels Potter | OAK | -1.22 | 193907130_OAK_CHA |
| 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 1939-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.07 | Bucky Walters | 160.3 | CIN |
| +002+ | 5.62 | Tommy Bridges | 118.7 | DET |
| +003+ | 5.45 | Lou Fette | 100 | ATL |
| +004+ | 5.35 | Bob Feller | 152.3 | CLE |
| +008+ | 4.74 | Whit Wyatt | 98.3 | LAN |
| +009+ | 4.61 | Red Ruffing | 117 | NYA |
| +015+ | 4.04 | Mace Brown | 86.3 | PIT |
| +017+ | 3.87 | Atley Donald | 95.3 | NYA |
| +021+ | 3.48 | Bump Hadley | 81.3 | NYA |
| +023+ | 3.34 | Lefty Grove | 102 | BOS |
| +025+ | 3.23 | Paul Derringer | 134.7 | CIN |
| +027+ | 2.94 | Bobo Newsom | 149.7 | TOT |
| +031+ | 2.72 | Curt Davis | 131 | SLN |
| +032+ | 2.67 | Lefty Gomez | 96 | NYA |
| +033+ | 2.59 | Bill Lohrman | 86 | SFN |
| +034+ | 2.56 | Whitey Moore | 98.7 | CIN |
| +036+ | 2.41 | Danny MacFayden | 109.7 | ATL |
| +038+ | 2.31 | Lon Warneke | 110.7 | SLN |
| +039+ | 2.3 | Bob Klinger | 126.7 | PIT |
| +041+ | 2.22 | Hugh Casey | 78 | LAN |
| +043+ | 2.05 | Claude Passeau | 130 | TOT |
| +048+ | 1.93 | Ted Lyons | 91 | CHA |
| +049+ | 1.91 | Bill Swift | 51.3 | PIT |
| +050+ | 1.89 | Dutch Leonard | 121.3 | MIN |
| +051+ | 1.88 | Milt Shoffner | 89.3 | ATL |
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