| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 5.21 | 195109091_PHI_ATL |
| Mike Garcia | CLE | 4.11 | 195109111_CLE_OAK |
| Sal Maglie | SFN | 4.03 | 195109090_SFN_LAN |
| Robin Roberts | PHI | 3.99 | 195109110_PHI_PIT |
| Saul Rogovin | CHA | 3.27 | 195109090_DET_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Starr | MIN | -5.11 | 195109091_MIN_NYA |
| Turk Lown | CHN | -2.34 | 195109092_CHN_CIN |
| Duane Pillette | BAL | -1.3 | 195109090_CLE_BAL |
| Red Munger | SLN | -1.21 | 195109092_SLN_PIT |
| Alex Kellner | OAK | -1.13 | 195109112_CLE_OAK |
Based on accumulated WAA for this season up to 1951-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 7.2 | Robin Roberts | 273.3 | PHI |
| +008+ | 6.94 | Sal Maglie | 259 | SFN |
| +010+ | 6.53 | Warren Spahn | 267.3 | ATL |
| +011+ | 6.38 | Eddie Lopat | 212 | NYA |
| +013+ | 6.12 | Saul Rogovin | 208.7 | TOT |
| +014+ | 5.98 | Early Wynn | 252.3 | CLE |
| +015+ | 5.7 | Mike Garcia | 236 | CLE |
| +019+ | 5.44 | Ralph Branca | 183 | LAN |
| +023+ | 4.84 | Preacher Roe | 221.3 | LAN |
| +024+ | 4.62 | Bob Feller | 242.3 | CLE |
| +027+ | 4.27 | Don Newcombe | 228.7 | LAN |
| +030+ | 4.15 | Billy Pierce | 222 | CHA |
| +032+ | 4.04 | Larry Jansen | 241.7 | SFN |
| +034+ | 3.8 | Chet Nichols | 122.7 | ATL |
| +036+ | 3.72 | Vern Bickford | 159.7 | ATL |
| +035+ | 3.72 | Steve Gromek | 95 | CLE |
| +037+ | 3.66 | Mickey McDermott | 160.7 | BOS |
| +038+ | 3.61 | Max Lanier | 142 | SLN |
| +043+ | 3.44 | Mel Parnell | 201 | BOS |
| +045+ | 3.41 | Bubba Church | 216 | PHI |
| +044+ | 3.41 | Allie Reynolds | 194.3 | NYA |
| +050+ | 3.25 | Sam Zoldak | 122 | OAK |
| +054+ | 3.04 | Ewell Blackwell | 213 | CIN |
| +059+ | 2.88 | Harry Perkowski | 98.7 | CIN |
| +060+ | 2.86 | Al Brazle | 123 | SLN |
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