Active Leaders & Records for Bases On Balls per 9 IP
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| Rank | Player (yrs, age) | Bases On Balls per 9 IP | IP | Throws |
|---|---|---|---|---|
| 1. | Kyle Hendricks (11, 34) | 2.0073 | 1470.2 | R |
| 2. | Jacob deGrom (10, 36) | 2.0371 | 1356.1 | R |
| 3. | Chris Sale (14, 35) | 2.1038 | 1805.1 | L |
| 4. | Clayton Kershaw (16, 36) | 2.2196 | 2712.2 | L |
| 5. | Gerrit Cole (11, 33) | 2.2803 | 1859.0 | R |
| 6. | Aaron Nola (10, 31) | 2.3594 | 1453.1 | R |
| 7. | Max Scherzer (16, 39) | 2.3685 | 2834.2 | R |
| 8. | Sean Manaea (9, 32) | 2.4826 | 1022.1 | L |
| 9. | Carlos Carrasco (15, 37) | 2.4866 | 1556.1 | R |
| 10. | Justin Verlander (19, 41) | 2.4990 | 3331.1 | R |
| 11. | Kevin Gausman (12, 33) | 2.5128 | 1558.0 | R |
| 12. | Alex Cobb (12, 36) | 2.6080 | 1311.1 | R |
| 13. | Nathan Eovaldi (13, 34) | 2.6088 | 1431.2 | R |
| 14. | Marcus Stroman (10, 33) | 2.6094 | 1331.1 | R |
| 15. | Zack Wheeler (10, 34) | 2.6298 | 1410.0 | R |
| 16. | Alex Wood (12, 33) | 2.6557 | 1240.1 | L |
| 17. | Jose Quintana (13, 35) | 2.6729 | 1825.0 | L |
| 18. | Germán Márquez (8, 29) | 2.6752 | 1016.0 | R |
| 19. | José Berríos (9, 30) | 2.6892 | 1245.0 | R |
| 20. | Patrick Corbin (12, 34) | 2.7639 | 1745.1 | L |
| 21. | Dallas Keuchel (12, 36) | 2.8068 | 1625.2 | L |
| 22. | Jesse Chavez (17, 40) | 2.8500 | 1080.0 | R |
| 23. | Michael Wacha (12, 32) | 2.8853 | 1316.1 | R |
| 24. | Drew Smyly (11, 35) | 2.8917 | 1098.2 | L |
| 25. | Yu Darvish (12, 37) | 2.9053 | 1648.0 | R |
| 26. | Jordan Lyles (14, 33) | 2.9404 | 1509.0 | R |
| 27. | Taijuan Walker (11, 31) | 2.9841 | 1070.2 | R |
| 28. | Julio Teheran (13, 33) | 3.0109 | 1470.2 | R |
| 29. | Kyle Freeland (8, 31) | 3.0240 | 1000.0 | L |
| 30. | Luis Castillo (8, 31) | 3.0323 | 1083.1 | R |
| 31. | Jon Gray (10, 32) | 3.0397 | 1134.0 | R |
| 32. | Chase Anderson (11, 36) | 3.0508 | 1062.0 | R |
| 33. | Jake Odorizzi (11, 34) | 3.0662 | 1253.1 | R |
| 34. | Eduardo Rodríguez (8, 31) | 3.0754 | 1100.1 | L |
| 35. | Sonny Gray (12, 34) | 3.0881 | 1588.1 | R |
| 36. | Wade Miley (14, 37) | 3.1197 | 1745.1 | L |
| 37. | Kyle Gibson (12, 36) | 3.1325 | 1721.0 | R |
| 38. | Zach Davies (9, 31) | 3.1335 | 1048.1 | R |
| 39. | Lance Lynn (13, 37) | 3.1494 | 1914.2 | R |
| 40. | Martín Pérez (13, 33) | 3.2464 | 1469.1 | L |
| 41. | Danny Duffy (11, 35) | 3.3165 | 1172.1 | L |
| 42. | Charlie Morton (17, 40) | 3.3217 | 1983.1 | R |
| 43. | Lucas Giolito (8, 29) | 3.4183 | 1013.2 | R |
| 44. | Matt Moore (13, 35) | 3.7545 | 1102.2 | L |
| 45. | Robbie Ray (10, 32) | 3.8111 | 1228.0 | L |
| 46. | Blake Snell (9, 31) | 4.0863 | 1004.1 | L |
