| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Sain | ATL | 7.9 | 194809170_PIT_ATL |
| Johnny Schmitz | CHN | 7.27 | 194809190_CHN_LAN |
| Harry Brecheen | SLN | 7.08 | 194809192_SLN_SFN |
| Dutch Leonard | PHI | 6.92 | 194809191_PIT_PHI |
| Bob Lemon | CLE | 6.24 | 194809191_OAK_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Early Wynn | MIN | -4.78 | 194809180_MIN_CLE |
| Herm Wehmeier | CIN | -2.78 | 194809180_CIN_SFN |
| Bill Kennedy | BAL | -1.8 | 194809170_BOS_BAL |
| Marino Pieretti | CHA | -1.63 | 194809192_MIN_CHA |
| Mel Queen | PIT | -1.57 | 194809192_PIT_PHI |
Based on accumulated WAA for this season up to 1948-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9.28 | Johnny Sain | 284.7 | ATL |
| +006+ | 9.03 | Harry Brecheen | 215 | SLN |
| +008+ | 8.48 | Bob Lemon | 279 | CLE |
| +010+ | 8.26 | Dutch Leonard | 219.7 | PHI |
| +011+ | 8.12 | Johnny Schmitz | 234 | CHN |
| +019+ | 6.09 | Gene Bearden | 187 | CLE |
| +022+ | 5.03 | Ray Scarborough | 160.3 | MIN |
| +024+ | 4.95 | Hal Newhouser | 237.3 | DET |
| +027+ | 4.78 | Mel Parnell | 193.3 | BOS |
| +029+ | 4.65 | Joe Dobson | 233.3 | BOS |
| +030+ | 4.62 | Preacher Roe | 158.7 | LAN |
| +033+ | 4.31 | Rex Barney | 217 | LAN |
| +038+ | 3.79 | Robin Roberts | 132.3 | PHI |
| +037+ | 3.79 | Steve Gromek | 127 | CLE |
| +039+ | 3.77 | Warren Spahn | 242 | ATL |
| +042+ | 3.57 | Johnny Vander Meer | 206 | CIN |
| +044+ | 3.48 | Bob Chesnes | 169.3 | PIT |
| +046+ | 3.2 | Vic Raschi | 213.3 | NYA |
| +047+ | 3.09 | Sheldon Jones | 191.3 | SFN |
| +048+ | 3.04 | Andy Hansen | 92.7 | SFN |
| +049+ | 3.03 | Dizzy Trout | 178 | DET |
| +052+ | 2.86 | Larry Jansen | 261 | SFN |
| +053+ | 2.83 | Elmer Riddle | 191 | PIT |
| +057+ | 2.68 | Joe Hatten | 200 | LAN |
| +059+ | 2.67 | Eddie Lopat | 214.3 | NYA |
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