| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sal Maglie | SFN | 4.94 | 195109131_SFN_SLN |
| Warren Spahn | ATL | 4.86 | 195109132_ATL_SLN |
| Eddie Lopat | NYA | 4.77 | 195109130_DET_NYA |
| Preacher Roe | LAN | 2.79 | 195109140_LAN_PIT |
| Mickey McDermott | BOS | 1.43 | 195109140_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Sanford | BAL | -3.25 | 195109140_BAL_BOS |
| Tom Poholsky | SLN | -1.34 | 195109131_SFN_SLN |
| Joe Hatten | CHN | -1.34 | 195109120_ATL_CHN |
| Sid Hudson | MIN | -1.25 | 195109120_CHA_MIN |
| Bill Wight | BOS | -1.06 | 195109120_DET_BOS |
Based on accumulated WAA for this season up to 1951-09-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 7.33 | Warren Spahn | 276.3 | ATL |
| +007+ | 7.15 | Robin Roberts | 273.3 | PHI |
| +012+ | 6.1 | Saul Rogovin | 208.7 | TOT |
| +013+ | 5.99 | Sal Maglie | 260.3 | SFN |
| +014+ | 5.95 | Early Wynn | 252.3 | CLE |
| +016+ | 5.67 | Mike Garcia | 236 | CLE |
| +018+ | 5.45 | Eddie Lopat | 216 | NYA |
| +019+ | 5.44 | Preacher Roe | 230.3 | LAN |
| +020+ | 5.41 | Ralph Branca | 183 | LAN |
| +025+ | 4.59 | Bob Feller | 242.3 | CLE |
| +029+ | 4.23 | Don Newcombe | 228.7 | LAN |
| +030+ | 4.13 | Billy Pierce | 222 | CHA |
| +032+ | 4.01 | Larry Jansen | 241.7 | SFN |
| +034+ | 3.79 | Chet Nichols | 131.7 | ATL |
| +035+ | 3.71 | Steve Gromek | 95 | CLE |
| +036+ | 3.69 | Vern Bickford | 159.7 | ATL |
| +038+ | 3.59 | Bubba Church | 225 | PHI |
| +044+ | 3.48 | Al Brazle | 132 | SLN |
| +045+ | 3.38 | Bob Lemon | 247.3 | CLE |
| +046+ | 3.37 | Allie Reynolds | 194.3 | NYA |
| +049+ | 3.34 | Vic Raschi | 233.3 | NYA |
| +052+ | 3.27 | Mel Parnell | 208.7 | BOS |
| +053+ | 3.22 | Sam Zoldak | 122 | OAK |
| +055+ | 3.06 | Mickey McDermott | 163.7 | BOS |
| +056+ | 3 | Ewell Blackwell | 213 | CIN |
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