| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bucky Walters | CIN | 7.53 | 193908081_CIN_CHN |
| Red Ruffing | NYA | 6.11 | 193908090_NYA_MIN |
| Lou Fette | ATL | 5.21 | 193908091_ATL_SFN |
| Lefty Grove | BOS | 3.19 | 193908080_OAK_BOS |
| Bill Lohrman | SFN | 1.25 | 193908091_ATL_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lefty Mills | BAL | -5.09 | 193908070_BAL_CLE |
| Buck Ross | OAK | -5.05 | 193908091_OAK_BOS |
| Hugh Mulcahy | PHI | -2.03 | 193908080_LAN_PHI |
| Schoolboy Rowe | DET | -0.32 | 193908090_CHA_DET |
| Red Evans | LAN | -0.24 | 193908080_LAN_PHI |
Based on accumulated WAA for this season up to 1939-08-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.21 | Bucky Walters | 209.3 | CIN |
| +003+ | 6.96 | Red Ruffing | 169 | NYA |
| +009+ | 5.93 | Bob Feller | 192.3 | CLE |
| +011+ | 5.45 | Lou Fette | 126.7 | ATL |
| +013+ | 4.89 | Lefty Grove | 138 | BOS |
| +014+ | 4.86 | Paul Derringer | 189 | CIN |
| +016+ | 4.76 | Hugh Casey | 128.7 | LAN |
| +019+ | 4.41 | Bump Hadley | 107 | NYA |
| +020+ | 4.06 | Tommy Bridges | 148.7 | DET |
| +021+ | 4.05 | Mort Cooper | 131 | SLN |
| +022+ | 3.96 | Ted Lyons | 125 | CHA |
| +025+ | 3.91 | Atley Donald | 122.7 | NYA |
| +027+ | 3.8 | Curt Davis | 172 | SLN |
| +028+ | 3.74 | Carl Hubbell | 86 | SFN |
| +029+ | 3.65 | Mace Brown | 123.7 | PIT |
| +031+ | 3.57 | Dutch Leonard | 172.3 | MIN |
| +034+ | 3.48 | Bob Klinger | 163 | PIT |
| +035+ | 3.46 | Whitey Moore | 139.3 | CIN |
| +036+ | 3.39 | Milt Shoffner | 125 | ATL |
| +040+ | 3.06 | Bill Lohrman | 126.7 | SFN |
| +041+ | 2.98 | Bill Posedel | 154.7 | ATL |
| +042+ | 2.96 | Danny MacFayden | 146 | ATL |
| +046+ | 2.88 | Claude Passeau | 176 | TOT |
| +048+ | 2.76 | Lon Warneke | 130.7 | SLN |
| +049+ | 2.75 | Bob Bowman | 103.7 | SLN |
_