| Starter | Tm | Tier | Game |
|---|---|---|---|
| Robin Roberts | PHI | 5.67 | 195109170_PHI_SLN |
| Early Wynn | CLE | 3.67 | 195109190_CLE_BOS |
| Preacher Roe | LAN | 3.45 | 195109190_LAN_SLN |
| Eddie Lopat | NYA | 3.42 | 195109170_CLE_NYA |
| Billy Pierce | CHA | 1.53 | 195109180_CHA_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Turk Lown | CHN | -2.69 | 195109170_LAN_CHN |
| Jim Wilson | ATL | -1.67 | 195109180_ATL_PIT |
| Ray Scarborough | BOS | -1.31 | 195109170_CHA_BOS |
| Sid Hudson | MIN | -1.12 | 195109181_BAL_MIN |
| Tom Poholsky | SLN | -1.11 | 195109180_LAN_SLN |
Based on accumulated WAA for this season up to 1951-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 7.95 | Robin Roberts | 284.3 | PHI |
| +007+ | 7.16 | Warren Spahn | 285.3 | ATL |
| +009+ | 6.82 | Early Wynn | 270.3 | CLE |
| +012+ | 6.3 | Preacher Roe | 239.3 | LAN |
| +013+ | 6.27 | Eddie Lopat | 225 | NYA |
| +015+ | 6.09 | Saul Rogovin | 208.7 | TOT |
| +017+ | 5.95 | Sal Maglie | 269.3 | SFN |
| +018+ | 5.85 | Mike Garcia | 246.7 | CLE |
| +024+ | 4.77 | Ralph Branca | 191.7 | LAN |
| +026+ | 4.74 | Billy Pierce | 231 | CHA |
| +028+ | 4.61 | Larry Jansen | 250.7 | SFN |
| +030+ | 4.25 | Don Newcombe | 235.3 | LAN |
| +031+ | 4.21 | Bubba Church | 234 | PHI |
| +033+ | 3.99 | Bob Feller | 247 | CLE |
| +034+ | 3.98 | Allie Reynolds | 203.3 | NYA |
| +035+ | 3.98 | Al Brazle | 142 | SLN |
| +037+ | 3.86 | Steve Gromek | 101 | CLE |
| +039+ | 3.76 | Bob Lemon | 255.7 | CLE |
| +040+ | 3.71 | Vern Bickford | 159.7 | ATL |
| +046+ | 3.41 | Chet Nichols | 138.7 | ATL |
| +050+ | 3.33 | Vic Raschi | 240.3 | NYA |
| +052+ | 3.28 | Mel Parnell | 209 | BOS |
| +056+ | 2.97 | Clem Labine | 54 | LAN |
| +057+ | 2.82 | Max Lanier | 152 | SLN |
| +058+ | 2.74 | Harry Perkowski | 102 | CIN |
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