| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Sain | ATL | 9.23 | 194809290_ATL_LAN |
| Harry Brecheen | SLN | 8.48 | 194809302_PIT_SLN |
| Bob Lemon | CLE | 5.66 | 194810010_DET_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 |
| Bill Kennedy | BAL | -2.12 | 194810012_BAL_CHA |
| Al Gettel | CHA | -0.8 | 194810012_BAL_CHA |
| Red Munger | SLN | -0.58 | 194809301_PIT_SLN |
Based on accumulated WAA for this season up to 1948-10-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 10.23 | Harry Brecheen | 233 | SLN |
| +005+ | 10.15 | Johnny Sain | 309.7 | ATL |
| +009+ | 8.55 | Johnny Schmitz | 242 | CHN |
| +010+ | 8.54 | Dutch Leonard | 225.7 | PHI |
| +012+ | 8.25 | Bob Lemon | 293.7 | CLE |
| +016+ | 7.06 | Gene Bearden | 211.7 | CLE |
| +020+ | 6.23 | Hal Newhouser | 263.3 | DET |
| +022+ | 5.52 | Preacher Roe | 174 | LAN |
| +023+ | 5.21 | Ray Scarborough | 176.3 | MIN |
| +028+ | 4.82 | Rex Barney | 240 | LAN |
| +029+ | 4.81 | Mel Parnell | 212 | BOS |
| +036+ | 3.83 | Robin Roberts | 146.3 | PHI |
| +037+ | 3.73 | Steve Gromek | 127 | CLE |
| +040+ | 3.63 | Bob Feller | 278 | CLE |
| +043+ | 3.6 | Joe Dobson | 241 | BOS |
| +044+ | 3.46 | Sheldon Jones | 200.3 | SFN |
| +045+ | 3.36 | Nels Potter | 111.3 | TOT |
| +046+ | 3.26 | Johnny Vander Meer | 223 | CIN |
| +047+ | 3.25 | Larry Jansen | 277 | SFN |
| +050+ | 3.18 | Tommy Byrne | 131.3 | NYA |
| +051+ | 2.99 | Dizzy Trout | 181 | DET |
| +053+ | 2.84 | Ned Garver | 190 | BAL |
| +056+ | 2.75 | Ralph Branca | 213.7 | LAN |
| +060+ | 2.62 | Satchel Paige | 72.7 | CLE |
| +064+ | 2.58 | Spec Shea | 155.7 | NYA |
_