| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 5.2 | 195109010_ATL_PHI |
| Ralph Branca | LAN | 3.82 | 195109010_LAN_SFN |
| Sal Maglie | SFN | 2.86 | 195109010_LAN_SFN |
| Eddie Lopat | NYA | 2.77 | 195109010_NYA_MIN |
| Early Wynn | CLE | 2.51 | 195109010_BAL_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sid Hudson | MIN | -1.31 | 195109010_NYA_MIN |
| Cliff Chambers | SLN | -1.03 | 195109010_PIT_SLN |
| Jim Wilson | ATL | -0.59 | 195108300_CHN_ATL |
| Chuck Stobbs | BOS | -0.53 | 195108300_BOS_DET |
| Tommy Byrne | BAL | -0.42 | 195109010_BAL_CLE |
Based on accumulated WAA for this season up to 1951-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 6.46 | Robin Roberts | 250 | PHI |
| +007+ | 6.37 | Warren Spahn | 249.3 | ATL |
| +009+ | 6.1 | Mike Garcia | 213.7 | CLE |
| +012+ | 5.81 | Sal Maglie | 241 | SFN |
| +013+ | 5.62 | Eddie Lopat | 203 | NYA |
| +015+ | 5.52 | Early Wynn | 234 | CLE |
| +016+ | 5.38 | Preacher Roe | 212.3 | LAN |
| +018+ | 5.07 | Saul Rogovin | 190.7 | TOT |
| +020+ | 4.88 | Ralph Branca | 167 | LAN |
| +024+ | 4.15 | Don Newcombe | 212.7 | LAN |
| +026+ | 4.02 | Bob Feller | 218.3 | CLE |
| +029+ | 3.93 | Larry Jansen | 225.7 | SFN |
| +030+ | 3.87 | Bubba Church | 205.3 | PHI |
| +031+ | 3.84 | Mickey McDermott | 152.7 | BOS |
| +033+ | 3.81 | Chet Nichols | 111.3 | ATL |
| +034+ | 3.76 | Vern Bickford | 159.7 | ATL |
| +037+ | 3.6 | Allie Reynolds | 180 | NYA |
| +045+ | 3.08 | Connie Marrero | 173.3 | MIN |
| +049+ | 2.97 | Steve Gromek | 84 | CLE |
| +051+ | 2.86 | Ewell Blackwell | 192.7 | CIN |
| +056+ | 2.65 | Vic Raschi | 215.7 | NYA |
| +058+ | 2.55 | Mel Parnell | 183.7 | BOS |
| +057+ | 2.55 | Sam Zoldak | 107 | OAK |
| +060+ | 2.45 | Bob Lemon | 221.7 | CLE |
| +061+ | 2.41 | Harry Brecheen | 128 | SLN |
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