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| Single-Season On-Base Pct Leaderboard | |
| * - Indicates Hall of Fame
+ - indicates hit-less at-bats added to meet 502PA requirement. |
| Rank | Player | On-Base Pct | PA | Year | |
| 1. | Dan Brouthers | .4077 | 650 | 1884 | |
| 2. | Oyster Burns | .3923 | 627 | 1884 | |
| 3. | Dave Orr | .3867 | 675 | 1884 | |
| 4. | Tommy McCarthy | .3831 | 617 | 1884 | |
| 5. | Roger Connor | .3806 | 536 | 1884 | |
| 6. | Piggy Ward | .3767 | 645 | 1884 | |
| 7. | Fred Mann | .3675 | 567 | 1884 | |
| 8. | Abner Dalrymple | .3664 | 595 | 1884 | |
| 9. | Henry Larkin | .3636 | 650 | 1884 | |
| 10. | Bid McPhee | .3569 | 610 | 1884 | |
| 11. | Ed Swartwood | .3567 | 642 | 1884 | |
| 12. | Pete Hotaling | .3561 | 556 | 1884 | |
| 13. | Pete Browning | .3525 | 661 | 1884 | |
| 14. | Jack Rowe | .3515 | 587 | 1884 | |
| 15. | Fred Carroll | .3503 | 532 | 1884 | |
| 16. | George Gore | .3466 | 710 | 1884 | |
| 17. | Sy Sutcliffe | .3466+ | 490 | 1884 | |
| 18. | Harry Moore | .3450 | 572 | 1884 | |
| 19. | Harry Stovey | .3436 | 649 | 1884 | |
| 20. | Jimmy Wolf | .3434 | 630 | 1884 | |
| 21. | Cap Anson | .3393 | 681 | 1884 | |
| 22. | Fred Dunlap | .3360 | 630 | 1884 | |
| 23. | King Kelly | .3359 | 649 | 1884 | |
| 24. | Jack Glasscock | .3348 | 688 | 1884 | |
| 25. | Sam Wise | .3344 | 607 | 1884 | |
| 26. | Jerrie Moore | .3340 | 540 | 1884 | |
| 27. | Paul Hines | .3323 | 656 | 1884 | |
| 28. | John Reilly | .3293 | 665 | 1884 | |
| 29. | Joe Quinn | .3272 | 656 | 1884 | |
| 30. | Martin Powell | .3271 | 650 | 1884 | |
| 31. | Candy Nelson | .3246 | 696 | 1884 | |
| 32. | Dude Esterbrook | .3245 | 604 | 1884 | |
| 33. | Billy O'Brien | .3240 | 608 | 1884 | |
| 34. | Paul Radford | .3238 | 667 | 1884 | |
| 35. | John O'Rourke | .3236 | 620 | 1884 | |
| 36. | George Pinkney | .3209 | 656 | 1884 | |
| 37. | Fred Lewis | .3183 | 669 | 1884 | |
| 38. | Buck Ewing | .3146 | 639 | 1884 | |
| 39. | Tom York | .3141 | 554 | 1884 | |
| 40. | Charlie Bennett | .3137 | 593 | 1884 | |
| 41. | Juice Latham | .3116+ | 478 | 1884 | |
| 42. | Ezra Sutton | .3107 | 634 | 1884 | |
| 43. | Podge Weihe | .3106 | 616 | 1884 | |
| 44. | Jim Fogarty | .3094 | 533 | 1884 | |
| 45. | Tom Mansell | .3073 | 606 | 1884 | |
| 46. | Fleet Walker | .3053 | 524 | 1884 | |
| 47. | Mike Dorgan | .3049 | 610 | 1884 | |
| 48. | Cliff Carroll | .3049 | 656 | 1884 | |
| 49. | John Clapp | .3041 | 642 | 1884 | |
| 50. | Dennis Casey | .3038+ | 483 | 1884 | |
| 51. | Arlie Latham | .3030 | 571 | 1884 | |
| 52. | Jumbo Davis | .3017 | 519 | 1884 | |
| 53. | Tom Brown | .3006+ | 458 | 1884 | |
| 54. | Jack Manning | .2994 | 534 | 1884 | |
| 55. | Arthur Irwin | .2948 | 606 | 1884 | |
| 56. | Dasher Troy | .2935 | 553 | 1884 | |
| 57. | Pete Gillespie | .2930 | 646 | 1884 | |
| 58. | Charley Jones | .2923 | 585 | 1884 | |
| 59. | George Wood | .2918 | 682 | 1884 | |
| 60. | Jim O'Rourke | .2914 | 652 | 1884 | |
| 61. | Pop Corkhill | .2909 | 636 | 1884 | |
| 62. | Blondie Purcell | .2897 | 608 | 1884 | |
| 63. | John Peters | .2887 | 634 | 1884 | |
| 64. | Buttercup Dickerson | .2881 | 604 | 1884 | |
| 65. | Ed Miller | .2875 | 562 | 1884 | |
| 66. | Frank Fennelly | .2873 | 642 | 1884 | |
| 67. | Chippy McGarr | .2821 | 586 | 1884 | |
| 68. | George Wright | .2805 | 606 | 1884 | |
| 69. | Gat Stires | .2794+ | 477 | 1884 | |
| 70. | Jim Clinton | .2784 | 643 | 1884 | |
| 71. | Ecky Stearns | .2774+ | 476 | 1884 | |
| 72. | Jerry Denny | .2770 | 642 | 1884 | |
| 73. | Ed Andrews | .2765 | 557 | 1884 | |
| 74. | Charlie Ganzel | .2758 | 504 | 1884 | |
| 75. | Deacon White | .2741 | 530 | 1884 | |
| 76. | Steve Bellan | .2736 | 530 | 1884 | |
| 77. | Jim Tipper | .2713+ | 484 | 1884 | |
| 78. | Mike Moynahan | .2665+ | 469 | 1884 | |
| 79. | Doggie Miller | .2661+ | 416 | 1884 | |
| 80. | Joe Sommer | .2652 | 559 | 1884 | |
| 81. | Jack O'Brien | .2635+ | 420 | 1884 | |
| 82. | Dave Rowe | .2629 | 505 | 1884 | |
| 83. | Charlie Comiskey | .2604 | 553 | 1884 | |
| 84. | Chief Roseman | .2586 | 611 | 1884 | |
| 85. | Mike McGeary | .2575+ | 401 | 1884 | |
| 86. | Hick Carpenter | .2561 | 709 | 1884 | |
| 87. | Frank McLaughlin | .2550+ | 495 | 1884 | |
| 88. | Jack Leary | .2535+ | 477 | 1884 | |
| 89. | Jack Leary | .2535+ | 483 | 1884 | |
| 90. | Ed Yewell | .2524 | 535 | 1884 | |
| 91. | Fraley Rogers | .2521 | 604 | 1884 | |
| 92. | John Morrill | .2520 | 653 | 1884 | |
| 93. | Dell Darling | .2515+ | 435 | 1884 | |
| 94. | Ned Hanlon | .2510+ | 381 | 1884 | |
| 95. | Joe Farrell | .2508 | 618 | 1884 | |
| 96. | Jack Farrell | .2508 | 657 | 1884 | |
| 97. | John O'Brien | .2505 | 552 | 1884 | |
| 98. | Jim Tray | .2500 | 559 | 1884 | |
| 99. | Sid Farrar | .2495 | 559 | 1884 | |
| 100. | Count Sensenderfer | .2465 | 516 | 1884 |
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