+ - Indicates Hall of Famer. Bold indicates active player.
Statistic Description: 9 * ER / IP For recent years, leaders need 1 IP per team game played. Bold indicates lowest ERA using current stats Gold means awarded ERA title at end of year.
Minimum of 1000 IP, 3000 PA, 500 games (fielding), 200 stolen base attempts (catchers) or 80 stolen base attempts (baserunners only since 1951) or 100 decisions for career and active leaderboards for rate statistics.
| Rank | Player (yrs, age) | Earned Run Average | Throws |
|---|---|---|---|
| 1. | Mariano Rivera (19, 43) | 2.205 | R |
| 2. | Clayton Kershaw (6, 25) | 2.704 | L |
| 3. | Adam Wainwright (8, 31) | 3.117 | R |
| 4. | Felix Hernandez (9, 27) | 3.151 | R |
| 5. | Johan Santana (12, 34) | 3.203 | L |
| 6. | Jered Weaver (8, 30) | 3.252 | R |
| 7. | Matt Cain (9, 28) | 3.350 | R |
| 8. | Tim Lincecum (7, 29) | 3.372 | R |
| 9. | Roy Halladay (16, 36) | 3.373 | R |
| 10. | Cole Hamels (8, 29) | 3.391 | L |
| 11. | Justin Verlander (9, 30) | 3.392 | R |
| 12. | Jake Peavy (12, 32) | 3.447 | R |
| 13. | Tim Hudson (15, 37) | 3.451 | R |
| 14. | CC Sabathia (13, 32) | 3.495 | L |
| 15. | Cliff Lee (12, 34) | 3.565 | L |
| 16. | Chad Billingsley (8, 28) | 3.653 | R |
| 17. | Dan Haren (11, 32) | 3.685 | R |
| 18. | Jon Lester (8, 29) | 3.710 | L |
| 19. | Zack Greinke (10, 29) | 3.746 | R |
| 20. | Chris Carpenter (15, 38) | 3.759 | R |
| 21. | James Shields (8, 31) | 3.829 | R |
| 22. | Matt Garza (7, 29) | 3.838 | R |
| 23. | Andy Pettitte (18, 41) | 3.855 | L |
| 24. | Mark Buehrle (14, 34) | 3.869 | L |
| 25. | Erik Bedard (10, 34) | 3.916 | L |
| 26. | Barry Zito (14, 35) | 3.921 | L |
| 27. | Josh Beckett (13, 33) | 3.939 | R |
| 28. | Wandy Rodriguez (9, 34) | 4.001 | L |
| 29. | A.J. Burnett (15, 36) | 4.007 | R |
| 30. | Derek Lowe (17, 40) | 4.020 | R |
| 31. | R.A. Dickey (11, 38) | 4.026 | R |
| 32. | Bartolo Colon (16, 40) | 4.056 | R |
| 33. | Ubaldo Jimenez (8, 29) | 4.073 | R |
| 34. | Ismael Valdez (12, 39) | 4.088 | R |
| 35. | John Lackey (11, 34) | 4.101 | R |
| 36. | Ted Lilly (15, 37) | 4.139 | L |
| 37. | Kelvim Escobar (12, 37) | 4.151 | R |
| 38. | Freddy Garcia (15, 36) | 4.156 | R |
| 39. | Scott Kazmir (9, 29) | 4.202 | L |
| 40. | Bronson Arroyo (14, 36) | 4.203 | R |
| 41. | Joe Saunders (9, 32) | 4.211 | L |
| 42. | Jeremy Guthrie (10, 34) | 4.212 | R |
| 43. | Aaron Harang (12, 35) | 4.232 | R |
| 44. | Jake Westbrook (13, 35) | 4.236 | R |
| 45. | Paul Maholm (9, 31) | 4.245 | L |
| 46. | Brett Myers (12, 32) | 4.247 | R |
| 47. | Ervin Santana (9, 30) | 4.274 | R |
| 48. | Chris Capuano (9, 34) | 4.286 | L |
| 49. | Ryan Dempster (16, 36) | 4.333 | R |
| 50. | Jon Garland (13, 33) | 4.337 | R |
| Rank | Player (yrs, age) | Earned Run Average | Throws |
| 51. | Kyle Lohse (13, 34) | 4.424 | R |
| 52. | LaTroy Hawkins (19, 40) | 4.440 | R |
| 53. | Joe Blanton (10, 32) | 4.448 | R |
| 54. | Edwin Jackson (11, 29) | 4.450 | R |
| 55. | Gavin Floyd (10, 30) | 4.479 | R |
| 56. | Miguel Batista (18, 42) | 4.481 | R |
| 57. | Kevin Correia (11, 32) | 4.485 | R |
| 58. | Ricky Nolasco (8, 30) | 4.490 | R |
| 59. | Darren Oliver (20, 42) | 4.515 | L |
| 60. | Oliver Perez (11, 31) | 4.523 | L |
| 61. | Jose Contreras (11, 41) | 4.546 | R |
| 62. | Jason Marquis (14, 34) | 4.567 | R |
| 63. | Bruce Chen (15, 36) | 4.573 | L |
| 64. | Zach Duke (9, 30) | 4.577 | L |
| 65. | Aaron Cook (11, 34) | 4.601 | R |
| 66. | Esteban Loaiza (14, 41) | 4.648 | R |
| 67. | Kip Wells (12, 36) | 4.707 | R |
| 68. | Dave Bush (9, 33) | 4.727 | R |
| 69. | Rodrigo Lopez (11, 37) | 4.824 | R |
| 70. | Jamey Wright (18, 38) | 4.883 | R |
| 71. | Jeremy Bonderman (8, 30) | 4.890 | R |
| Jeff Francis (9, 32) | 4.890 | L | |
| 73. | Ramon Ortiz (12, 40) | 4.899 | R |
| 74. | Nate Robertson (9, 35) | 5.014 | L |
| 75. | Mark Hendrickson (10, 39) | 5.027 | L |