| Starter | Tm | Tier | Game |
|---|---|---|---|
| Danny MacFayden | ATL | 4.65 | 193808141_LAN_ATL |
| Paul Derringer | CIN | 3.95 | 193808141_SLN_CIN |
| Carl Hubbell | SFN | 3.57 | 193808131_SFN_PHI |
| Dizzy Dean | CHN | 1.97 | 193808130_CHN_PIT |
| Johnny Allen | CLE | 1.82 | 193808132_CLE_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobo Newsom | BAL | -5.69 | 193808141_DET_BAL |
| Max Butcher | PHI | -1.93 | 193808132_SFN_PHI |
| Harry Kelley | MIN | -1.81 | 193808140_BOS_MIN |
| Elden Auker | DET | -1.4 | 193808142_DET_BAL |
| Bud Thomas | OAK | -0.86 | 193808141_OAK_NYA |
Based on accumulated WAA for this season up to 1938-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.46 | Bill Lee | 199.7 | CHN |
| +007+ | 6.28 | Paul Derringer | 216 | CIN |
| +008+ | 5.94 | Danny MacFayden | 146 | ATL |
| +013+ | 5.54 | Carl Hubbell | 174 | SFN |
| +015+ | 5.44 | Johnny Vander Meer | 180 | CIN |
| +017+ | 5.16 | Lou Fette | 174 | ATL |
| +018+ | 4.96 | Bill McGee | 148 | SLN |
| +023+ | 4.47 | Lefty Grove | 157.7 | BOS |
| +026+ | 4.35 | Russ Bauers | 173.3 | PIT |
| +028+ | 4.21 | Red Ruffing | 170 | NYA |
| +031+ | 4 | Larry French | 177 | CHN |
| +034+ | 3.87 | Freddie Fitzsimmons | 145.7 | LAN |
| +035+ | 3.77 | Dutch Leonard | 160 | MIN |
| +036+ | 3.59 | Lon Warneke | 149 | SLN |
| +037+ | 3.57 | Jim Tobin | 169.7 | PIT |
| +040+ | 3.32 | Charlie Root | 92.3 | CHN |
| +041+ | 3.23 | Peaches Davis | 140.7 | CIN |
| +042+ | 3.17 | Clay Bryant | 181.3 | CHN |
| +044+ | 3.13 | Tot Pressnell | 159.3 | LAN |
| +045+ | 3.08 | Bob Weiland | 169.3 | SLN |
| +048+ | 2.9 | Dizzy Dean | 54.3 | CHN |
| +051+ | 2.86 | Bill Lohrman | 96.3 | SFN |
| +053+ | 2.72 | Bob Klinger | 118 | PIT |
| +054+ | 2.69 | Johnny Allen | 165.3 | CLE |
| +055+ | 2.68 | Thornton Lee | 167 | CHA |
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