| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 5.24 | 195108010_ATL_SLN |
| Ralph Branca | LAN | 4.41 | 195108010_LAN_PIT |
| Allie Reynolds | NYA | 2.28 | 195108011_DET_NYA |
| Bubba Church | PHI | 1.84 | 195107310_PHI_CIN |
| Bob Feller | CLE | 1.51 | 195107310_CLE_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Starr | MIN | -4.74 | 195108011_CLE_MIN |
| Al Widmar | BAL | -3.68 | 195108021_BAL_BOS |
| Alex Kellner | OAK | -2.79 | 195107310_CHA_OAK |
| Herm Wehmeier | CIN | -1.21 | 195108020_PHI_CIN |
| Jim Hearn | SFN | -0.82 | 195107310_SFN_CHN |
Based on accumulated WAA for this season up to 1951-08-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.71 | Sal Maglie | 188.3 | SFN |
| +004+ | 5.68 | Warren Spahn | 186 | ATL |
| +007+ | 5.56 | Mike Garcia | 157.3 | CLE |
| +010+ | 4.71 | Preacher Roe | 170 | LAN |
| +012+ | 4.46 | Eddie Lopat | 153.7 | NYA |
| +013+ | 4.44 | Robin Roberts | 188 | PHI |
| +014+ | 4.43 | Don Newcombe | 160.7 | LAN |
| +020+ | 4.03 | Bubba Church | 164.7 | PHI |
| +021+ | 3.92 | Ralph Branca | 112 | LAN |
| +022+ | 3.81 | Vern Bickford | 151.7 | ATL |
| +023+ | 3.64 | Mickey McDermott | 131.7 | BOS |
| +029+ | 3.33 | Saul Rogovin | 140.7 | TOT |
| +032+ | 3.18 | Larry Jansen | 184 | SFN |
| +034+ | 3.15 | Bob Feller | 167 | CLE |
| +036+ | 2.92 | Connie Marrero | 132 | MIN |
| +040+ | 2.8 | Vic Raschi | 170.7 | NYA |
| +042+ | 2.67 | Allie Reynolds | 146.3 | NYA |
| +043+ | 2.66 | Howie Fox | 148 | CIN |
| +044+ | 2.65 | Russ Meyer | 157 | PHI |
| +046+ | 2.6 | Early Wynn | 176.3 | CLE |
| +054+ | 2.21 | Ned Garver | 144 | BAL |
| +057+ | 2.16 | Harry Perkowski | 81.3 | CIN |
| +058+ | 2.1 | Gerry Staley | 158 | SLN |
| +059+ | 2.09 | Harry Brecheen | 91.7 | SLN |
| +063+ | 2.01 | Billy Pierce | 152 | CHA |
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