| Starter | Tm | Tier | Game |
|---|---|---|---|
| Paul Derringer | CIN | 4.59 | 193809070_PIT_CIN |
| Lou Fette | ATL | 4.5 | 193809090_ATL_PHI |
| Red Ruffing | NYA | 3.98 | 193809070_NYA_BOS |
| Freddie Fitzsimmons | LAN | 2.42 | 193809090_LAN_SFN |
| Clay Bryant | CHN | 1.86 | 193809090_CHN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Chase | MIN | -2.71 | 193809080_OAK_MIN |
| Buck Ross | OAK | -2 | 193809090_OAK_BOS |
| Slick Coffman | DET | -1.28 | 193809070_CLE_DET |
| Hugh Mulcahy | PHI | -1.14 | 193809070_LAN_PHI |
| Earl Whitehill | CLE | -0.79 | 193809080_DET_CLE |
Based on accumulated WAA for this season up to 1938-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +008+ | 7.08 | Bill Lee | 245.7 | CHN |
| +010+ | 7.07 | Lou Fette | 226 | ATL |
| +013+ | 6.79 | Paul Derringer | 265 | CIN |
| +016+ | 6.47 | Danny MacFayden | 184 | ATL |
| +019+ | 6 | Freddie Fitzsimmons | 176.7 | LAN |
| +023+ | 5.64 | Johnny Vander Meer | 189.3 | CIN |
| +024+ | 5.58 | Clay Bryant | 228.3 | CHN |
| +026+ | 5.51 | Bill McGee | 191 | SLN |
| +029+ | 5.16 | Russ Bauers | 203.7 | PIT |
| +031+ | 5.02 | Red Ruffing | 218.3 | NYA |
| +030+ | 5.02 | Carl Hubbell | 179 | SFN |
| +032+ | 4.93 | Thornton Lee | 209.3 | CHA |
| +033+ | 4.71 | Dutch Leonard | 204.3 | MIN |
| +037+ | 4.29 | Charlie Root | 128.3 | CHN |
| +042+ | 4.09 | Bob Klinger | 136.7 | PIT |
| +045+ | 3.57 | Jim Tobin | 200.3 | PIT |
| +047+ | 3.49 | Ted Lyons | 161.7 | CHA |
| +049+ | 3.38 | Ira Hutchinson | 121 | ATL |
| +050+ | 3.36 | Lefty Gomez | 210 | NYA |
| +052+ | 3.23 | Dick Errickson | 98.3 | ATL |
| +054+ | 3.08 | Lon Warneke | 187.7 | SLN |
| +056+ | 3.03 | Bill Swift | 123.7 | PIT |
| +057+ | 3 | Bob Weiland | 214.7 | SLN |
| +059+ | 2.88 | Jim Turner | 230.3 | ATL |
| +060+ | 2.87 | Bump Hadley | 139.3 | NYA |
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