| Starter | Tm | Tier | Game |
|---|---|---|---|
| Danny MacFayden | ATL | 5.02 | 193808200_ATL_LAN |
| Bill Lee | CHN | 4.63 | 193808211_PIT_CHN |
| Red Ruffing | NYA | 3.12 | 193808212_NYA_OAK |
| Russ Bauers | PIT | 2.31 | 193808212_PIT_CHN |
| Bill McGee | SLN | 1.73 | 193808212_CIN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jimmie DeShong | MIN | -5.06 | 193808200_MIN_BOS |
| Bobo Newsom | BAL | -3.52 | 193808210_BAL_DET |
| Hugh Mulcahy | PHI | -1.72 | 193808200_PHI_SFN |
| Buck Ross | OAK | -1.58 | 193808200_NYA_OAK |
| Tex Carleton | CHN | -1.43 | 193808212_PIT_CHN |
Based on accumulated WAA for this season up to 1938-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.91 | Paul Derringer | 225 | CIN |
| +006+ | 6.35 | Danny MacFayden | 155 | ATL |
| +007+ | 6.32 | Bill Lee | 216.3 | CHN |
| +013+ | 5.93 | Lou Fette | 184.7 | ATL |
| +015+ | 5.78 | Bill McGee | 166 | SLN |
| +019+ | 5.41 | Johnny Vander Meer | 180 | CIN |
| +021+ | 5.29 | Red Ruffing | 188 | NYA |
| +022+ | 4.92 | Carl Hubbell | 179 | SFN |
| +024+ | 4.69 | Freddie Fitzsimmons | 154.7 | LAN |
| +028+ | 4.37 | Dutch Leonard | 171 | MIN |
| +029+ | 4.36 | Lefty Grove | 157.7 | BOS |
| +033+ | 3.97 | Russ Bauers | 180.3 | PIT |
| +037+ | 3.69 | Bob Weiland | 179 | SLN |
| +038+ | 3.57 | Larry French | 184.3 | CHN |
| +040+ | 3.52 | Lon Warneke | 158 | SLN |
| +041+ | 3.5 | Bill Lohrman | 105.3 | SFN |
| +042+ | 3.42 | Jim Tobin | 174.7 | PIT |
| +044+ | 3.39 | Tot Pressnell | 169 | LAN |
| +043+ | 3.39 | Thornton Lee | 176 | CHA |
| +048+ | 3.16 | Ira Hutchinson | 106 | ATL |
| +051+ | 3.06 | Clay Bryant | 181.3 | CHN |
| +052+ | 2.97 | Dizzy Dean | 59.7 | CHN |
| +053+ | 2.94 | Ted Lyons | 152.7 | CHA |
| +055+ | 2.83 | Lefty Gomez | 178 | NYA |
| +056+ | 2.71 | Bob Klinger | 118 | PIT |
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