| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Sain | ATL | 9.23 | 194809290_ATL_LAN |
| Harry Brecheen | SLN | 8.48 | 194809302_PIT_SLN |
| Gene Bearden | CLE | 3.27 | 194809280_CHA_CLE |
| Hal Newhouser | DET | 2.57 | 194809290_BAL_DET |
| Rex Barney | LAN | 1.84 | 194809290_ATL_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Early Wynn | MIN | -5.06 | 194809300_MIN_BOS |
| Herm Wehmeier | CIN | -4.1 | 194809290_CIN_CHN |
| Dutch McCall | CHN | -1.32 | 194809280_CIN_CHN |
| Joe Ostrowski | BAL | -1.15 | 194809300_BAL_DET |
| Frank Papish | CHA | -0.59 | 194809290_CHA_CLE |
Based on accumulated WAA for this season up to 1948-09-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 10.28 | Harry Brecheen | 233 | SLN |
| +005+ | 10.22 | Johnny Sain | 309.7 | ATL |
| +009+ | 8.59 | Johnny Schmitz | 242 | CHN |
| +010+ | 8.59 | Dutch Leonard | 225.7 | PHI |
| +012+ | 8.16 | Bob Lemon | 285.3 | CLE |
| +016+ | 7.11 | Gene Bearden | 211.7 | CLE |
| +020+ | 6.29 | Hal Newhouser | 263.3 | DET |
| +022+ | 5.55 | Preacher Roe | 174 | LAN |
| +023+ | 5.26 | Ray Scarborough | 176.3 | MIN |
| +028+ | 4.87 | Rex Barney | 240 | LAN |
| +029+ | 4.86 | Mel Parnell | 212 | BOS |
| +035+ | 3.86 | Robin Roberts | 146.3 | PHI |
| +037+ | 3.76 | Steve Gromek | 127 | CLE |
| +039+ | 3.69 | Bob Feller | 278 | CLE |
| +041+ | 3.66 | Joe Dobson | 241 | BOS |
| +044+ | 3.51 | Sheldon Jones | 200.3 | SFN |
| +045+ | 3.39 | Nels Potter | 111.3 | TOT |
| +046+ | 3.32 | Johnny Vander Meer | 223 | CIN |
| +047+ | 3.31 | Larry Jansen | 277 | SFN |
| +048+ | 3.21 | Tommy Byrne | 131.3 | NYA |
| +051+ | 3.04 | Dizzy Trout | 181 | DET |
| +053+ | 2.87 | Ned Garver | 190 | BAL |
| +058+ | 2.64 | Satchel Paige | 72.7 | CLE |
| +059+ | 2.62 | Spec Shea | 155.7 | NYA |
| +063+ | 2.56 | Ralph Branca | 206.7 | LAN |
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