STAT-ERA-SEP -- All players in database
Regular season
| Primary |
| Name | Name | ERA |
| Gary Peters* | Beavers | 1.46 |
| Pedro Ramos | Slims | 1.86 |
| Sandy Koufax* | Bishops | 2.24 |
| Lee Stange | Seals | 2.26 |
| Bob Sadowski | Hot Rods | 2.35 |
| Warren Spahn* | Metro Stars | 2.36 |
| Ken McBride | Totems | 2.54 |
| Eddie Fisher | Metro Stars | 2.66 |
| Moe Drabowsky | Beavers | 2.69 |
| Ray Herbert | Beavers | 2.70 |
| John Tsitouris | Seals | 2.70 |
| Dick Ellsworth* | Gladiators | 2.72 |
| Bob Gibson | Metro Stars | 2.73 |
| Juan Pizarro* | Surfers | 2.77 |
| Al Downing* | Monarchs | 2.82 |
| John Buzhardt | Rivers | 2.86 |
| Don Nottebart | Elephants | 2.89 |
| Bob Friend | Elephants | 2.91 |
| Tom Cheney | Totems | 2.91 |
| Curt Simmons* | Bishops | 2.92 |
| Jim O'Toole* | Hot Rods | 2.97 |
| Paul Toth | Cruisers | 2.98 |
| Juan Marichal | Cruisers | 3.01 |
| Don Rudolph* | Seals | 3.15 |
| Glen Hobbie | Seals | 3.16 |
| Steve Ridzik | Elephants | 3.17 |
| Dick Farrell | Colts | 3.17 |
| Larry Jackson | Monarchs | 3.20 |
| Joe Nuxhall* | Monarchs | 3.23 |
| Stan Williams | Hot Rods | 3.26 |
| Jim Kaat* | Surfers | 3.28 |
| Jim Maloney | Rivers | 3.28 |
| Bennie Daniels | Hornets | 3.33 |
| Ernie Broglio | Hot Rods | 3.36 |
| Ed Rakow | Hornets | 3.38 |
| Robin Roberts | Surfers | 3.38 |
| Ralph Terry | Fortress | 3.39 |
| Dick Stigman* | Fortress | 3.42 |
| Ray Culp | Slims | 3.43 |
| Dave Stenhouse | Seals | 3.43 |
| Camilo Pascual | Slims | 3.44 |
| Bill Monbouquette | Bishops | 3.45 |
| Don Schwall | Beavers | 3.47 |
| Earl Wilson | Bishops | 3.48 |
| Dave Morehead | Cruisers | 3.48 |
| Don Drysdale | Monarchs | 3.53 |
| Milt Pappas | Monarchs | 3.55 |
| Ken Johnson | Mets | 3.55 |
| Lew Burdette | Lions | 3.55 |
| Bob Shaw | Hot Rods | 3.56 |
| Art Mahaffey | Elephants | 3.61 |
| Jack Kralick* | Surfers | 3.64 |
| Dean Chance | Hornets | 3.69 |
| Mudcat Grant | Lions | 3.69 |
| Roger Craig | Colts | 3.71 |
| Jim Bunning | Surfers | 3.73 |
| Steve Barber* | Beavers | 3.74 |
| Cal McLish | Gladiators | 3.79 |
| Don Mossi* | Fortress | 3.83 |
| Orlando Pena | Lions | 3.85 |
| Johnny Podres* | Totems | 3.89 |
| Jack Sanford | Slims | 3.94 |
| Hal Brown | Lions | 3.97 |
| Dave Wickersham | Elephants | 4.08 |
| Bobby Bolin | Gladiators | 4.10 |
| Hank Aguirre* | Fortress | 4.13 |
| Dick Donovan | Totems | 4.19 |
| Don Cardwell | Hot Rods | 4.19 |
| Don Lee | Gladiators | 4.26 |
| Denny Lemaster* | Cruisers | 4.27 |
| Bob Bruce | Mets | 4.43 |
| Claude Osteen* | Rivers | 4.44 |
| Ray Sadecki* | Gladiators | 4.45 |
| Bob Buhl | Hornets | 4.46 |
| Jim Bouton | Rivers | 4.53 |
| Bob Purkey | Metro Stars | 4.61 |
| Carl Willey | Colts | 4.62 |
| Sam McDowell* | Seals | 4.67 |
| Whitey Ford* | Cruisers | 4.68 |
| Bob Miller | Colts | 4.70 |
| Billy O'Dell* | Metro Stars | 4.82 |
| Jim Perry | Fortress | 4.84 |
| Chris Short* | Monarchs | 4.89 |
| Joey Jay | Hornets | 4.96 |
| Jack Fisher | Gladiators | 5.12 |
| Al Jackson* | Colts | 5.48 |
| Jay Hook | Mets | 5.57 |
| Mickey Lolich* | Mets | 5.82 |
| Bo Belinsky* | Mets | 6.45 |
| Jim Duckworth | Mets | 7.26 |