| Starter | Tm | Tier | Game |
|---|---|---|---|
| Robin Roberts | PHI | 6.36 | 195109290_LAN_PHI |
| Warren Spahn | ATL | 5.61 | 195109290_SFN_ATL |
| Sal Maglie | SFN | 4.84 | 195109290_SFN_ATL |
| Preacher Roe | LAN | 4.41 | 195109300_LAN_PHI |
| Eddie Lopat | NYA | 3.74 | 195109291_BOS_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Starr | MIN | -5.68 | 195109290_OAK_MIN |
| Jim Wilson | ATL | -2.01 | 195109300_SFN_ATL |
| Duane Pillette | BAL | -1.84 | 195109282_CHA_BAL |
| Alex Kellner | OAK | -1.38 | 195109290_OAK_MIN |
| Howie Pollet | PIT | -1.28 | 195109300_CIN_PIT |
Based on accumulated WAA for this season up to 1951-09-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 8.32 | Robin Roberts | 315 | PHI |
| +008+ | 7.58 | Sal Maglie | 290 | SFN |
| +009+ | 7.54 | Warren Spahn | 310.3 | ATL |
| +012+ | 6.43 | Early Wynn | 274.3 | CLE |
| +013+ | 6.42 | Eddie Lopat | 234.3 | NYA |
| +014+ | 6.42 | Larry Jansen | 277.7 | SFN |
| +016+ | 5.92 | Saul Rogovin | 216.7 | TOT |
| +017+ | 5.82 | Preacher Roe | 258 | LAN |
| +022+ | 5.39 | Allie Reynolds | 221.3 | NYA |
| +026+ | 5.12 | Mike Garcia | 253.7 | CLE |
| +027+ | 5.08 | Billy Pierce | 240 | CHA |
| +031+ | 4.49 | Don Newcombe | 264 | LAN |
| +033+ | 4.3 | Vic Raschi | 258.3 | NYA |
| +034+ | 4.19 | Chet Nichols | 156.3 | ATL |
| +038+ | 3.8 | Mel Parnell | 221 | BOS |
| +042+ | 3.6 | Ralph Branca | 196 | LAN |
| +043+ | 3.51 | Vern Bickford | 164.7 | ATL |
| +048+ | 3.38 | Ken Raffensberger | 248.7 | CIN |
| +047+ | 3.38 | Ewell Blackwell | 233 | CIN |
| +052+ | 3.25 | Bob Feller | 249.3 | CLE |
| +053+ | 3.23 | Al Brazle | 155 | SLN |
| +054+ | 3.19 | Bubba Church | 247.3 | PHI |
| +055+ | 3.12 | Steve Gromek | 107 | CLE |
| +056+ | 3.06 | Bob Lemon | 263 | CLE |
| +059+ | 2.84 | Sam Zoldak | 128 | OAK |
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