+ - Indicates Hall of Famer. Bold indicates active player.
Minimum of 1000 IP, 3000 PA, 500 games (fielding), 200 stolen base attempts (catchers) or 100 decisions for career and active leaderboards for rate statistics.
| Rank | Player (yrs, age) | Bases On Balls per 9 IP | Throws |
|---|---|---|---|
| 1. | Carlos Silva (9, 32) | 1.7251 | R |
| 2. | Roy Halladay (14, 34) | 1.8491 | R |
| 3. | Dan Haren (9, 30) | 1.8900 | R |
| 4. | Mariano Rivera (17, 41) | 2.0432 | R |
| 5. | Mark Buehrle (12, 32) | 2.0495 | L |
| 6. | James Shields (6, 29) | 2.0685 | R |
| 7. | Roy Oswalt (11, 33) | 2.0891 | R |
| 8. | Cliff Lee (10, 32) | 2.1490 | L |
| 9. | Carl Pavano (13, 35) | 2.1748 | R |
| 10. | Cole Hamels (6, 27) | 2.2629 | L |
| 11. | Zack Greinke (8, 27) | 2.2858 | R |
| 12. | Dave Bush (8, 31) | 2.3262 | R |
| 13. | Javier Vazquez (14, 34) | 2.4180 | R |
| 14. | Zach Duke (7, 28) | 2.4380 | L |
| 15. | Jered Weaver (6, 28) | 2.4495 | R |
| 16. | Joe Blanton (8, 30) | 2.4894 | R |
| 17. | Johan Santana (11, 32) | 2.4897 | L |
| 18. | Joel Pineiro (12, 32) | 2.4984 | R |
| 19. | Chris Carpenter (14, 36) | 2.5500 | R |
| 20. | Aaron Harang (10, 33) | 2.5796 | R |
| 21. | Ryan Franklin (12, 38) | 2.6453 | R |
| 22. | Derek Lowe (15, 38) | 2.6474 | R |
| 23. | Mark Hendrickson (10, 37) | 2.6561 | L |
| 24. | Bronson Arroyo (12, 34) | 2.6597 | R |
| 25. | Elmer Dessens (14, 40) | 2.6670 | R |
| 26. | Jeremy Guthrie (8, 32) | 2.6815 | R |
| 27. | Kyle Lohse (11, 32) | 2.6918 | R |
| 28. | John Lackey (10, 32) | 2.7297 | R |
| 29. | Josh Beckett (11, 31) | 2.7340 | R |
| 30. | Tim Hudson (13, 35) | 2.7395 | R |
| 31. | Felix Hernandez (7, 25) | 2.7486 | R |
| 32. | Rodrigo Lopez (10, 35) | 2.7515 | R |
| 33. | Jeff Francis (7, 30) | 2.7532 | L |
| 34. | CC Sabathia (11, 30) | 2.7598 | L |
| 35. | Kevin Millwood (15, 36) | 2.7675 | R |
| 36. | Aaron Cook (10, 32) | 2.7981 | R |
| 37. | Justin Verlander (7, 28) | 2.8054 | R |
| 38. | Jake Peavy (10, 30) | 2.8400 | R |
| 39. | Freddy Garcia (13, 34) | 2.8435 | R |
| 40. | Ervin Santana (7, 28) | 2.8713 | R |
| 41. | Brad Penny (12, 33) | 2.8717 | R |
| 42. | Brett Tomko (14, 38) | 2.8844 | R |
| 43. | Jake Westbrook (11, 33) | 2.8984 | R |
| 44. | LaTroy Hawkins (17, 38) | 2.9461 | R |
| 45. | Brandon Webb (7, 32) | 2.9667 | R |
| 46. | Brett Myers (10, 30) | 2.9717 | R |
| 47. | Ted Lilly (13, 35) | 2.9765 | L |
| 48. | Paul Maholm (7, 29) | 3.0061 | L |
| 49. | Bartolo Colon (14, 38) | 3.0120 | R |
| 50. | Jon Garland (12, 31) | 3.0240 | R |
| Rank | Player (yrs, age) | Bases On Balls per 9 IP | Throws |
| 51. | Livan Hernandez (16, 36) | 3.0272 | R |
| 52. | Jeff Suppan (16, 36) | 3.0740 | R |
| 53. | Ramon Ortiz (11, 38) | 3.0928 | R |
| 54. | Vicente Padilla (13, 33) | 3.1709 | R |
| 55. | Wandy Rodriguez (7, 32) | 3.2296 | L |
| 56. | Matt Cain (7, 26) | 3.2315 | R |
| 57. | Randy Wolf (13, 34) | 3.2327 | L |
| 58. | Jose Contreras (9, 39) | 3.2590 | R |
| 59. | Nate Robertson (9, 33) | 3.2803 | L |
| 60. | Tim Lincecum (5, 27) | 3.3181 | R |
| 61. | Tim Wakefield (19, 44) | 3.3614 | R |
| 62. | Darren Oliver (18, 40) | 3.4309 | L |
| 63. | Bruce Chen (13, 34) | 3.4465 | L |
| 64. | Jason Marquis (12, 32) | 3.4643 | R |
| 65. | Edwin Jackson (9, 27) | 3.6617 | R |
| 66. | Dontrelle Willis (9, 29) | 3.6835 | L |
| 67. | Barry Zito (12, 33) | 3.7327 | L |
| 68. | A.J. Burnett (13, 34) | 3.7922 | R |
| 69. | Arthur Rhodes (20, 41) | 3.9102 | L |
| 70. | Chad Billingsley (6, 26) | 3.9155 | R |
| 71. | Carlos Zambrano (11, 30) | 4.0549 | R |
| 72. | Miguel Batista (17, 40) | 4.0942 | R |
| 73. | Doug Davis (13, 35) | 4.1074 | L |
| 74. | Ryan Dempster (14, 34) | 4.1416 | R |
| 75. | Scott Kazmir (8, 27) | 4.1654 | L |
| 76. | Kerry Wood (13, 34) | 4.2987 | R |
| 77. | Jamey Wright (16, 36) | 4.4196 | R |
| 78. | Oliver Perez (9, 29) | 5.0843 | L |