| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -2.61 | 193809210_BOS_BAL |
| Buck Ross | OAK | -1.78 | 193809212_OAK_DET |
| Tex Carleton | CHN | -1.56 | 193809232_CHN_PHI |
| Slick Coffman | DET | -1.4 | 193809211_OAK_DET |
| Earl Whitehill | CLE | -1.02 | 193809232_CLE_DET |
Based on accumulated WAA for this season up to 1938-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9.54 | Bill Lee | 272.7 | CHN |
| +006+ | 8.26 | Paul Derringer | 290 | CIN |
| +018+ | 6.34 | Lou Fette | 229 | ATL |
| +019+ | 6.29 | Clay Bryant | 252.3 | CHN |
| +023+ | 5.85 | Red Ruffing | 235.3 | NYA |
| +024+ | 5.81 | Freddie Fitzsimmons | 193.7 | LAN |
| +025+ | 5.77 | Thornton Lee | 227.3 | CHA |
| +026+ | 5.44 | Russ Bauers | 224 | PIT |
| +028+ | 5.31 | Bill McGee | 205 | SLN |
| +029+ | 5.05 | Johnny Vander Meer | 199.3 | CIN |
| +032+ | 4.92 | Carl Hubbell | 179 | SFN |
| +034+ | 4.83 | Danny MacFayden | 198.7 | ATL |
| +040+ | 4.41 | Bob Klinger | 152.3 | PIT |
| +042+ | 4.36 | Dutch Leonard | 218.3 | MIN |
| +043+ | 4.35 | Charlie Root | 147 | CHN |
| +044+ | 4.34 | Jim Tobin | 221.3 | PIT |
| +045+ | 4.25 | Ira Hutchinson | 139.3 | ATL |
| +046+ | 4.18 | Lefty Gomez | 227 | NYA |
| +051+ | 3.64 | Dick Errickson | 120.3 | ATL |
| +053+ | 3.32 | Jim Turner | 247.3 | ATL |
| +054+ | 3.23 | Hal Schumacher | 185.3 | SFN |
| +057+ | 2.99 | Lon Warneke | 187.7 | SLN |
| +059+ | 2.89 | Ted Lyons | 177.7 | CHA |
| +060+ | 2.8 | Jim Weaver | 127 | TOT |
| +065+ | 2.64 | Bill Lohrman | 132.7 | SFN |
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