| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 5.21 | 195109091_PHI_ATL |
| Robin Roberts | PHI | 4.94 | 195109070_PHI_LAN |
| Mike Garcia | CLE | 4.78 | 195109071_CLE_BAL |
| Sal Maglie | SFN | 4.03 | 195109090_SFN_LAN |
| Eddie Lopat | NYA | 3.99 | 195109080_MIN_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Starr | MIN | -5.11 | 195109091_MIN_NYA |
| Fred Sanford | BAL | -2.52 | 195109080_CLE_BAL |
| Turk Lown | CHN | -2.34 | 195109092_CHN_CIN |
| Virgil Trucks | DET | -1.56 | 195109072_DET_CHA |
| Alex Kellner | OAK | -1.45 | 195109072_BOS_OAK |
Based on accumulated WAA for this season up to 1951-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 6.91 | Sal Maglie | 259 | SFN |
| +008+ | 6.52 | Mike Garcia | 231.3 | CLE |
| +009+ | 6.49 | Warren Spahn | 267.3 | ATL |
| +010+ | 6.36 | Eddie Lopat | 212 | NYA |
| +012+ | 6.31 | Robin Roberts | 264.3 | PHI |
| +013+ | 6.11 | Saul Rogovin | 208.7 | TOT |
| +015+ | 5.7 | Early Wynn | 249.3 | CLE |
| +019+ | 5.41 | Ralph Branca | 183 | LAN |
| +021+ | 4.81 | Preacher Roe | 221.3 | LAN |
| +022+ | 4.8 | Bob Feller | 235.3 | CLE |
| +024+ | 4.77 | Don Newcombe | 227.7 | LAN |
| +026+ | 4.34 | Allie Reynolds | 191 | NYA |
| +031+ | 3.97 | Larry Jansen | 234.7 | SFN |
| +033+ | 3.78 | Chet Nichols | 122.7 | ATL |
| +034+ | 3.7 | Vern Bickford | 159.7 | ATL |
| +035+ | 3.66 | Mickey McDermott | 160.7 | BOS |
| +036+ | 3.61 | Max Lanier | 142 | SLN |
| +038+ | 3.53 | Steve Gromek | 93 | CLE |
| +042+ | 3.44 | Mel Parnell | 201 | BOS |
| +044+ | 3.38 | Bubba Church | 216 | PHI |
| +047+ | 3.3 | Billy Pierce | 213 | CHA |
| +052+ | 3.1 | Sam Zoldak | 116 | OAK |
| +057+ | 2.9 | Connie Marrero | 180.3 | MIN |
| +059+ | 2.86 | Al Brazle | 123 | SLN |
| +063+ | 2.7 | Ewell Blackwell | 207.3 | CIN |
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