STAT-ERA-wk25 -- All players in database
Regular season
| Primary |
| Name | Name | ERA |
| Van Lingle Mungo | Dodgers | 2.32 |
| Monty Stratton | Frogs | 2.59 |
| Cliff Melton* | Blue Sox | 2.60 |
| Lefty Gomez* | Mutuals | 2.70 |
| Red Ruffing | Atlantics | 3.18 |
| Tommy Bridges | Glaziers | 3.19 |
| Bill Swift | Frogs | 3.22 |
| Lefty Grove* | Bean Brewers | 3.28 |
| Clint Brown | Frogs | 3.29 |
| Slick Castleman | Blue Sox | 3.29 |
| Lee Grissom* | Gassers | 3.30 |
| Johnny Allen | Atlantics | 3.48 |
| Thornton Lee* | Glaziers | 3.51 |
| George Gill | Dodgers | 3.53 |
| Roxie Lawson | Titans | 3.54 |
| Lou Fette | Glaziers | 3.63 |
| Carl Hubbell* | Mutuals | 3.65 |
| Tex Carleton | Dodgers | 3.66 |
| Monte Pearson | Mutuals | 3.67 |
| Jim Turner | Bean Brewers | 3.69 |
| Charlie Root | Sprudels | 3.71 |
| Clay Bryant | Gassers | 3.71 |
| Paul Derringer | Dodgers | 3.80 |
| Luke Hamlin | Mutuals | 3.80 |
| Elden Auker | Sprudels | 3.80 |
| Bill Lee | Titans | 3.82 |
| Herman Fink | Golden Buddhas | 3.90 |
| Guy Bush | Bean Brewers | 3.98 |
| Harry Gumbert | Blue Sox | 4.02 |
| Eddie Smith* | Gassers | 4.03 |
| Monte Weaver | Atlantics | 4.04 |
| Danny MacFayden | Atlantics | 4.07 |
| Russ Bauers | Dodgers | 4.13 |
| Jim Weaver | Mutuals | 4.13 |
| Gene Schott | Seals | 4.18 |
| Roy Parmelee | Frogs | 4.19 |
| Oral Hildebrand | Gassers | 4.21 |
| Johnny Murphy | Gassers | 4.27 |
| Ted Lyons | Whiffenpoofs | 4.30 |
| Bucky Walters | Glaziers | 4.36 |
| Jim Tobin | Frogs | 4.39 |
| Cy Blanton | Whiffenpoofs | 4.45 |
| John Whitehead | Gassers | 4.50 |
| Curt Davis | Seals | 4.51 |
| Bob Weiland* | | 4.51 |
| Jack Wilson | Sprudels | 4.52 |
| Larry French* | Titans | 4.53 |
| Al Hollingsworth* | Colonels | 4.54 |
| Buck Ross | Golden Buddhas | 4.56 |
| Hugh Mulcahy | Frogs | 4.68 |
| Wayne LaMaster* | Bean Brewers | 4.68 |
| Mel Harder | Sprudels | 4.69 |
| Syl Johnson | | 4.70 |
| Earl Whitehill* | Bean Brewers | 4.71 |
| Slick Coffman | Seals | 4.72 |
| Wes Ferrell | Whiffenpoofs | 4.77 |
| Peaches Davis | Colonels | 4.87 |
| George Caster | Golden Buddhas | 4.87 |
| Hal Schumacher | Frogs | 4.88 |
| Waite Hoyt | Blue Sox | 4.90 |
| Jake Wade* | Gassers | 4.92 |
| Dizzy Dean | Dodgers | 4.93 |
| Red Lucas | Golden Buddhas | 4.93 |
| Si Johnson | Seals | 4.95 |
| Johnny Vander Meer* | Titans | 4.97 |
| Rube Walberg* | Whiffenpoofs | 4.99 |
| Fred Frankhouse | Blue Sox | 5.08 |
| Lon Warneke | Whiffenpoofs | 5.09 |
| Bobo Newsom | Glaziers | 5.11 |
| Mace Brown | Whiffenpoofs | 5.15 |
| Joe Bowman | Atlantics | 5.16 |
| Bob Feller | Blue Sox | 5.22 |
| Willis Hudlin | Seals | 5.22 |
| Ivy Andrews | Glaziers | 5.28 |
| Jimmie DeShong | Seals | 5.28 |
| Vern Kennedy | | 5.33 |
| Johnny Marcum | Frogs | 5.36 |
| Jack Knott | Colonels | 5.39 |
| Johnny Lanning | Sprudels | 5.42 |
| Max Butcher | Frogs | 5.43 |
| Freddie Fitzsimmons | Colonels | 5.43 |
| Bill Trotter | Bean Brewers | 5.48 |
| Boots Poffenberger | Colonels | 5.51 |
| Bump Hadley | Seals | 5.52 |
| Ed Linke | Seals | 5.54 |
| Dick Coffman | Golden Buddhas | 5.62 |
| Denny Galehouse | Sprudels | 5.70 |
| Harry Kelley | Golden Buddhas | 5.71 |
| Lou Koupal | Titans | 5.81 |
| Ed Brandt* | Blue Sox | 5.90 |
| Pete Appleton | Glaziers | 5.99 |
| Bud Thomas | Dodgers | 6.02 |
| Claude Passeau | Sprudels | 6.09 |
| Chief Hogsett* | Colonels | 6.40 |
| Clyde Shoun* | Titans | 6.54 |
| Jim Walkup | Whiffenpoofs | 7.25 |
| Sugar Cain | Seals | 8.79 |