| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Walkup | BAL | -2.96 | 193809201_BOS_BAL |
| Buck Ross | OAK | -1.78 | 193809212_OAK_DET |
| Slick Coffman | DET | -1.4 | 193809211_OAK_DET |
| Steve Sundra | NYA | -0.63 | 193809220_NYA_CHA |
| Claude Passeau | PHI | -0.51 | 193809222_CHN_PHI |
Based on accumulated WAA for this season up to 1938-09-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9.55 | Bill Lee | 272.7 | CHN |
| +006+ | 8.34 | Paul Derringer | 290 | CIN |
| +017+ | 6.35 | Lou Fette | 229 | ATL |
| +019+ | 6.29 | Clay Bryant | 252.3 | CHN |
| +023+ | 5.86 | Red Ruffing | 235.3 | NYA |
| +024+ | 5.82 | Freddie Fitzsimmons | 193.7 | LAN |
| +025+ | 5.78 | Thornton Lee | 227.3 | CHA |
| +026+ | 5.5 | Russ Bauers | 224 | PIT |
| +028+ | 5.32 | Bill McGee | 205 | SLN |
| +029+ | 5.1 | Johnny Vander Meer | 199.3 | CIN |
| +032+ | 4.93 | Carl Hubbell | 179 | SFN |
| +033+ | 4.84 | Danny MacFayden | 198.7 | ATL |
| +038+ | 4.45 | Bob Klinger | 152.3 | PIT |
| +040+ | 4.4 | Jim Tobin | 221.3 | PIT |
| +043+ | 4.37 | Dutch Leonard | 218.3 | MIN |
| +044+ | 4.25 | Ira Hutchinson | 139.3 | ATL |
| +045+ | 4.19 | Lefty Gomez | 227 | NYA |
| +046+ | 4.16 | Charlie Root | 145 | CHN |
| +051+ | 3.65 | Dick Errickson | 120.3 | ATL |
| +053+ | 3.33 | Jim Turner | 247.3 | ATL |
| +055+ | 3.24 | Hal Schumacher | 185.3 | SFN |
| +056+ | 3.18 | Al Benton | 85 | DET |
| +058+ | 3 | Lon Warneke | 187.7 | SLN |
| +060+ | 2.9 | Ted Lyons | 177.7 | CHA |
| +061+ | 2.84 | Jim Weaver | 127 | TOT |
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