| pitchers | better ERA | career ERAs |
| Sandy Koufax or Whitey Ford | |
| Tom Seaver or Ferguson Jenkins | |
| Steve Carlton or Steve Rogers | |
| Jim Hunter or Andy Messersmith | |
| Juan Marichal or Bob Gibson | |
| Greg Maddux or Pedro Martinez | |
| Roger Clemens or Randy Johnson | |
| Dwight Gooden or Dave Stieb | |
| Robin Roberts or Don Drysdale | |
| John Smoltz or Curt Schilling | |
| Bert Blyleven or Mike Cuellar | |
| Frank Viola or Bob Welch | |
| David Cone or Jamie Moyer | |
| David Wells or Bret Saberhagen | |
| Jim Palmer or Nolan Ryan | |
| Phil Niekro or Gaylord Perry | |
| Frank Tanana or Jack Morris | |
| Mike Mussina or Andy Pettitte | |
| Vida Blue or Mickey Lolich | |
| Dennis Martinez or Orel Hershiser | |
| Ron Guidry or Fernando Valenzuela | |
| David Wells or Bret Saberhagen | |
| Jim Hunter or Andy Messersmith | |
| Jim Palmer or Nolan Ryan | |
| Juan Marichal or Bob Gibson | |
| Phil Niekro or Gaylord Perry | |
| Greg Maddux or Pedro Martinez | |
| Frank Tanana or Jack Morris | |
| Roger Clemens or Randy Johnson | |
| Mike Mussina or Andy Pettitte | |
| Dwight Gooden or Dave Stieb | |
| Vida Blue or Mickey Lolich | |
| Robin Roberts or Don Drysdale | |
| Dennis Martinez or Orel Hershiser | |
| John Smoltz or Curt Schilling | |
| Ron Guidry or Fernando Valenzuela | |
| Bert Blyleven or Mike Cuellar | |
| Sandy Koufax or Whitey Ford | |
| Frank Viola or Bob Welch | |
| Tom Seaver or Ferguson Jenkins | |
| David Cone or Jamie Moyer | |
| Steve Carlton or Steve Rogers | |