| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 6.69 | 193907301_PHI_CIN |
| Red Ruffing | NYA | 5.89 | 193908010_DET_NYA |
| Bob Feller | CLE | 4.42 | 193908010_CLE_BOS |
| Lefty Grove | BOS | 3.92 | 193908010_CLE_BOS |
| Danny MacFayden | ATL | 2.2 | 193908010_ATL_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Vern Kennedy | BAL | -4.69 | 193908010_BAL_MIN |
| Nels Potter | OAK | -3.43 | 193908010_CHA_OAK |
| Hugh Mulcahy | PHI | -1.86 | 193907291_PHI_CIN |
| Jake Wade | BOS | -1.11 | 193907290_BAL_BOS |
| Fred Hutchinson | DET | -0.45 | 193907302_DET_OAK |
Based on accumulated WAA for this season up to 1939-08-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.65 | Bucky Walters | 196.3 | CIN |
| +005+ | 6.06 | Red Ruffing | 153 | NYA |
| +007+ | 5.66 | Bob Feller | 183.3 | CLE |
| +008+ | 5.4 | Atley Donald | 113.3 | NYA |
| +011+ | 5.19 | Lou Fette | 112.3 | ATL |
| +014+ | 4.64 | Paul Derringer | 177.7 | CIN |
| +016+ | 4.4 | Whit Wyatt | 109 | LAN |
| +017+ | 4.32 | Hugh Casey | 117 | LAN |
| +018+ | 4.31 | Lefty Grove | 129 | BOS |
| +019+ | 4.26 | Bump Hadley | 100 | NYA |
| +022+ | 4 | Bobo Newsom | 187 | TOT |
| +023+ | 3.89 | Whitey Moore | 130 | CIN |
| +024+ | 3.86 | Tommy Bridges | 139.7 | DET |
| +027+ | 3.49 | Mace Brown | 116.7 | PIT |
| +028+ | 3.47 | Bill Posedel | 139.7 | ATL |
| +029+ | 3.26 | Mort Cooper | 113 | SLN |
| +033+ | 3.07 | Curt Davis | 163 | SLN |
| +034+ | 3.05 | Carl Hubbell | 73.3 | SFN |
| +035+ | 3.05 | Junior Thompson | 62.3 | CIN |
| +036+ | 3.02 | Ted Lyons | 117 | CHA |
| +040+ | 2.88 | Danny MacFayden | 140 | ATL |
| +043+ | 2.76 | Milt Shoffner | 119.7 | ATL |
| +044+ | 2.65 | Bill Lohrman | 110.7 | SFN |
| +045+ | 2.58 | Claude Passeau | 159 | TOT |
| +046+ | 2.57 | Bob Klinger | 155 | PIT |
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