| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eddie Lopat | NYA | 4.6 | 195108150_NYA_MIN |
| Robin Roberts | PHI | 3.89 | 195108140_PHI_ATL |
| Warren Spahn | ATL | 3.64 | 195108150_PHI_ATL |
| Ralph Branca | LAN | 3.04 | 195108150_LAN_SFN |
| Bob Feller | CLE | 2.56 | 195108130_DET_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Junior Walsh | PIT | -2.41 | 195108132_PIT_CIN |
| Virgil Trucks | DET | -2.01 | 195108150_DET_CHA |
| Turk Lown | CHN | -1.83 | 195108140_CHN_SLN |
| Dick Fowler | OAK | -1.23 | 195108150_BOS_OAK |
| Jim Wilson | ATL | -1.04 | 195108130_ATL_LAN |
Based on accumulated WAA for this season up to 1951-08-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.2 | Mike Garcia | 183 | CLE |
| +008+ | 5.53 | Warren Spahn | 213.3 | ATL |
| +009+ | 5.23 | Eddie Lopat | 178.7 | NYA |
| +011+ | 5.2 | Robin Roberts | 218 | PHI |
| +013+ | 5.01 | Sal Maglie | 209.3 | SFN |
| +017+ | 4.66 | Bob Feller | 193.7 | CLE |
| +018+ | 4.54 | Ralph Branca | 140 | LAN |
| +019+ | 4.51 | Preacher Roe | 179.3 | LAN |
| +020+ | 4.24 | Bubba Church | 188.7 | PHI |
| +022+ | 4.01 | Mickey McDermott | 152.7 | BOS |
| +023+ | 3.96 | Vern Bickford | 159.7 | ATL |
| +028+ | 3.71 | Saul Rogovin | 169 | TOT |
| +029+ | 3.66 | Don Newcombe | 183.7 | LAN |
| +034+ | 3.41 | Connie Marrero | 149 | MIN |
| +037+ | 3.34 | Howie Fox | 172.7 | CIN |
| +040+ | 3.26 | Larry Jansen | 195.7 | SFN |
| +042+ | 3.18 | Early Wynn | 200 | CLE |
| +044+ | 3.02 | Allie Reynolds | 162.7 | NYA |
| +049+ | 2.66 | Russ Meyer | 168 | PHI |
| +052+ | 2.34 | Vic Raschi | 192 | NYA |
| +059+ | 2.05 | Billy Pierce | 170 | CHA |
| +063+ | 2.02 | Harry Perkowski | 81.3 | CIN |
| +065+ | 1.99 | Mel Parnell | 162.3 | BOS |
| +066+ | 1.97 | Marlin Stuart | 78 | DET |
| +068+ | 1.92 | Max Surkont | 171.3 | ATL |
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