| Starter | Tm | Tier | Game |
|---|---|---|---|
| Danny MacFayden | ATL | 5.28 | 193808090_SFN_ATL |
| Lefty Grove | BOS | 4.45 | 193808110_BOS_OAK |
| Paul Derringer | CIN | 3.58 | 193808090_CHN_CIN |
| Johnny Allen | CLE | 3.2 | 193808100_CLE_BAL |
| Clay Bryant | CHN | 1.71 | 193808110_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -5.62 | 193808111_CLE_BAL |
| Ken Chase | MIN | -2.39 | 193808090_MIN_NYA |
| Hugh Mulcahy | PHI | -1.9 | 193808090_PHI_LAN |
| Bud Thomas | OAK | -1.03 | 193808100_BOS_OAK |
| Earl Whitehill | CLE | -1.01 | 193808092_CLE_BAL |
Based on accumulated WAA for this season up to 1938-08-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.25 | Paul Derringer | 207 | CIN |
| +005+ | 6.2 | Bill Lee | 190.7 | CHN |
| +010+ | 5.46 | Johnny Vander Meer | 180 | CIN |
| +015+ | 5.27 | Danny MacFayden | 137 | ATL |
| +016+ | 5.12 | Lou Fette | 165 | ATL |
| +017+ | 4.85 | Carl Hubbell | 165 | SFN |
| +019+ | 4.57 | Bill McGee | 140 | SLN |
| +020+ | 4.45 | Lefty Grove | 157.7 | BOS |
| +024+ | 4.18 | Red Ruffing | 161 | NYA |
| +025+ | 4.15 | Clay Bryant | 174.3 | CHN |
| +026+ | 4.02 | Jim Tobin | 157 | PIT |
| +028+ | 4 | Larry French | 177 | CHN |
| +033+ | 3.58 | Russ Bauers | 165.3 | PIT |
| +035+ | 3.52 | Lon Warneke | 140 | SLN |
| +038+ | 3.3 | Bob Weiland | 163.3 | SLN |
| +040+ | 3.18 | Ted Lyons | 127.7 | CHA |
| +042+ | 3.14 | Peaches Davis | 139.7 | CIN |
| +043+ | 3.1 | Dutch Leonard | 151 | MIN |
| +044+ | 3.07 | Dizzy Dean | 47.7 | CHN |
| +046+ | 3.05 | Charlie Root | 85.3 | CHN |
| +047+ | 2.95 | Freddie Fitzsimmons | 136.7 | LAN |
| +048+ | 2.92 | Tot Pressnell | 155.3 | LAN |
| +050+ | 2.87 | Bill Lohrman | 88 | SFN |
| +053+ | 2.73 | Bob Klinger | 118 | PIT |
| +054+ | 2.55 | Monty Stratton | 127.7 | CHA |
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