| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 5.56 | 193907211_CIN_LAN |
| Red Ruffing | NYA | 4.84 | 193907200_NYA_BAL |
| Mace Brown | PIT | 1.73 | 193907190_PIT_SFN |
| Whit Wyatt | LAN | 1.69 | 193907190_CIN_LAN |
| Bill Lohrman | SFN | 1.37 | 193907190_PIT_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Hugh Mulcahy | PHI | -2.95 | 193907190_SLN_PHI |
| George Gill | BAL | -2.39 | 193907210_BOS_BAL |
| Joe Haynes | MIN | -2.15 | 193907210_MIN_CLE |
| Cotton Pippen | OAK | -1.07 | 193907210_OAK_DET |
| Jake Wade | BOS | -1.03 | 193907191_BOS_CHA |
Based on accumulated WAA for this season up to 1939-07-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.73 | Bucky Walters | 178.3 | CIN |
| +003+ | 5.59 | Red Ruffing | 135 | NYA |
| +005+ | 5.5 | Bob Feller | 160.3 | CLE |
| +011+ | 4.77 | Atley Donald | 104.3 | NYA |
| +012+ | 4.64 | Lou Fette | 102.3 | ATL |
| +013+ | 4.39 | Bump Hadley | 90.3 | NYA |
| +014+ | 4.35 | Mace Brown | 99.3 | PIT |
| +015+ | 4.33 | Whit Wyatt | 109 | LAN |
| +018+ | 3.89 | Tommy Bridges | 122.7 | DET |
| +019+ | 3.87 | Lefty Grove | 111 | BOS |
| +025+ | 3.44 | Mort Cooper | 101 | SLN |
| +026+ | 3.32 | Paul Derringer | 149.7 | CIN |
| +028+ | 3.17 | Bill Posedel | 125.7 | ATL |
| +029+ | 3.16 | Lefty Gomez | 105 | NYA |
| +030+ | 3.11 | Danny MacFayden | 118.7 | ATL |
| +032+ | 3.07 | Whitey Moore | 109.7 | CIN |
| +034+ | 2.96 | Claude Passeau | 143 | TOT |
| +035+ | 2.93 | Hugh Casey | 94 | LAN |
| +038+ | 2.79 | Bill Lohrman | 96.3 | SFN |
| +039+ | 2.62 | Milt Shoffner | 107.3 | ATL |
| +044+ | 2.41 | Bob Klinger | 137.7 | PIT |
| +046+ | 2.4 | Bobo Newsom | 160 | TOT |
| +045+ | 2.4 | Ted Lyons | 100 | CHA |
| +049+ | 2.33 | Lon Warneke | 110.7 | SLN |
| +050+ | 2.3 | Curt Davis | 141 | SLN |
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