| Starter | Tm | Tier | Game |
|---|---|---|---|
| Early Wynn | MIN | -3.03 | 194808130_BOS_MIN |
| Dutch McCall | CHN | -1.59 | 194808152_CHN_CIN |
| Al Gettel | CHA | -1.47 | 194808140_CLE_CHA |
| Herm Wehmeier | CIN | -1.23 | 194808151_CHN_CIN |
| Red Munger | SLN | -1.17 | 194808130_SLN_PIT |
Based on accumulated WAA for this season up to 1948-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 7.82 | Dutch Leonard | 167 | PHI |
| +006+ | 7.06 | Harry Brecheen | 163 | SLN |
| +008+ | 6.45 | Johnny Sain | 215.7 | ATL |
| +010+ | 5.97 | Bob Lemon | 214 | CLE |
| +013+ | 5.66 | Johnny Schmitz | 182.3 | CHN |
| +015+ | 4.96 | Ted Wilks | 98.3 | SLN |
| +016+ | 4.95 | Ray Scarborough | 132.3 | MIN |
| +018+ | 4.76 | Gene Bearden | 126.7 | CLE |
| +021+ | 4.34 | Hal Newhouser | 180.7 | DET |
| +023+ | 4.24 | Joe Dobson | 177 | BOS |
| +029+ | 3.66 | Dizzy Trout | 156.3 | DET |
| +033+ | 3.28 | Mel Parnell | 141.3 | BOS |
| +036+ | 2.91 | Dave Koslo | 108.3 | SFN |
| +037+ | 2.88 | Bob Chesnes | 110.7 | PIT |
| +039+ | 2.78 | Vic Raschi | 151.7 | NYA |
| +043+ | 2.63 | Tommy Byrne | 81 | NYA |
| +045+ | 2.61 | Steve Gromek | 95.3 | CLE |
| +046+ | 2.56 | Ned Garver | 135.7 | BAL |
| +047+ | 2.46 | Robin Roberts | 79.3 | PHI |
| +051+ | 2.36 | Nels Potter | 97 | TOT |
| +052+ | 2.34 | Preacher Roe | 113.7 | LAN |
| +053+ | 2.33 | Ralph Branca | 172.3 | LAN |
| +054+ | 2.29 | Rex Barney | 148 | LAN |
| +057+ | 2.28 | Russ Meyer | 141.3 | CHN |
| +058+ | 2.2 | Satchel Paige | 38.3 | CLE |
_