| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 7.53 | 193908081_CIN_CHN |
| Bob Feller | CLE | 3.34 | 193908061_CLE_NYA |
| Lefty Grove | BOS | 3.19 | 193908080_OAK_BOS |
| Danny MacFayden | ATL | 2.28 | 193908060_ATL_CHN |
| Lefty Gomez | NYA | 1.32 | 193908061_CLE_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -5.09 | 193908070_BAL_CLE |
| Buck Ross | OAK | -3.63 | 193908061_BAL_OAK |
| Hugh Mulcahy | PHI | -2.03 | 193908080_LAN_PHI |
| Jack Wilson | BOS | -0.51 | 193908062_DET_BOS |
| Fred Hutchinson | DET | -0.32 | 193908061_DET_BOS |
Based on accumulated WAA for this season up to 1939-08-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.15 | Bucky Walters | 209.3 | CIN |
| +003+ | 7.04 | Red Ruffing | 162 | NYA |
| +007+ | 5.88 | Bob Feller | 192.3 | CLE |
| +008+ | 5.83 | Lou Fette | 120.3 | ATL |
| +014+ | 4.85 | Lefty Grove | 138 | BOS |
| +015+ | 4.81 | Paul Derringer | 189 | CIN |
| +017+ | 4.72 | Hugh Casey | 128.7 | LAN |
| +019+ | 4.38 | Bump Hadley | 107 | NYA |
| +021+ | 4.01 | Mort Cooper | 131 | SLN |
| +022+ | 4.01 | Tommy Bridges | 148.7 | DET |
| +024+ | 3.92 | Ted Lyons | 125 | CHA |
| +025+ | 3.88 | Atley Donald | 122.7 | NYA |
| +028+ | 3.75 | Curt Davis | 172 | SLN |
| +029+ | 3.69 | Claude Passeau | 172 | TOT |
| +030+ | 3.6 | Mace Brown | 123.7 | PIT |
| +031+ | 3.52 | Dutch Leonard | 172.3 | MIN |
| +034+ | 3.42 | Bob Klinger | 163 | PIT |
| +035+ | 3.36 | Carl Hubbell | 82.3 | SFN |
| +036+ | 3.19 | Milt Shoffner | 123.3 | ATL |
| +037+ | 3.18 | Bill Lohrman | 119.7 | SFN |
| +038+ | 3.15 | Whitey Moore | 130.3 | CIN |
| +043+ | 2.93 | Bill Posedel | 154.7 | ATL |
| +044+ | 2.92 | Danny MacFayden | 146 | ATL |
| +049+ | 2.72 | Lon Warneke | 130.7 | SLN |
| +050+ | 2.69 | Bob Bowman | 103.3 | SLN |
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