| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 5.2 | 195109010_ATL_PHI |
| Robin Roberts | PHI | 4.62 | 195109031_PHI_SFN |
| Mike Garcia | CLE | 4.09 | 195109020_BAL_CLE |
| Ralph Branca | LAN | 3.82 | 195109010_LAN_SFN |
| Sal Maglie | SFN | 2.86 | 195109010_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Starr | MIN | -5.67 | 195109031_MIN_BOS |
| Fred Sanford | BAL | -3.71 | 195109032_BAL_DET |
| Virgil Trucks | DET | -2.48 | 195109020_CHA_DET |
| Turk Lown | CHN | -1.9 | 195109032_PIT_CHN |
| Alex Kellner | OAK | -1.85 | 195109031_NYA_OAK |
Based on accumulated WAA for this season up to 1951-09-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 6.72 | Mike Garcia | 223.7 | CLE |
| +008+ | 6.63 | Robin Roberts | 259 | PHI |
| +009+ | 6.34 | Warren Spahn | 249.3 | ATL |
| +012+ | 5.68 | Sal Maglie | 241 | SFN |
| +014+ | 5.52 | Eddie Lopat | 203 | NYA |
| +015+ | 5.39 | Early Wynn | 234 | CLE |
| +016+ | 5.29 | Preacher Roe | 212.3 | LAN |
| +019+ | 5 | Saul Rogovin | 190.7 | TOT |
| +020+ | 4.8 | Ralph Branca | 167 | LAN |
| +026+ | 4.04 | Bob Feller | 226.3 | CLE |
| +028+ | 4 | Don Newcombe | 218.7 | LAN |
| +030+ | 3.8 | Larry Jansen | 225.7 | SFN |
| +032+ | 3.76 | Mickey McDermott | 152.7 | BOS |
| +033+ | 3.75 | Vern Bickford | 159.7 | ATL |
| +034+ | 3.71 | Allie Reynolds | 182 | NYA |
| +036+ | 3.57 | Steve Gromek | 93 | CLE |
| +037+ | 3.54 | Bubba Church | 209 | PHI |
| +047+ | 3.01 | Connie Marrero | 173.3 | MIN |
| +049+ | 2.97 | Chet Nichols | 113.7 | ATL |
| +050+ | 2.93 | Max Lanier | 132 | SLN |
| +054+ | 2.81 | Mel Parnell | 192 | BOS |
| +058+ | 2.75 | Harry Perkowski | 89.7 | CIN |
| +060+ | 2.58 | Billy Pierce | 199 | CHA |
| +061+ | 2.55 | Vic Raschi | 215.7 | NYA |
| +062+ | 2.54 | Ewell Blackwell | 198.7 | CIN |
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