78 MLB Players debut in 1891
| # | Player | debut Date |
|---|---|---|
| 1. | George Boone | 4/23/1891 |
| 2. | Bill Bowman | 6/18/1891 |
| 3. | Theodore Breitenstein | 4/28/1891 |
| 4. | Frank Burrell | 8/1/1891 |
| 5. | Harry Burrell | 9/13/1891 |
| 6. | Tom Cahill | 4/9/1891 |
| 7. | Jim Canavan | 4/8/1891 |
| 8. | Kid Carsey | 4/8/1891 |
| 9. | Ed Cassian | 6/26/1891 |
| 10. | Dad Clarkson | 8/20/1891 |
| 11. | Bill Clymer | 6/25/1891 |
| 12. | Tom Cotter | 9/3/1891 |
| 13. | Jim Curtiss | 7/15/1891 |
| 14. | Bill Dahlen | 4/22/1891 |
| 15. | Jack Darragh | 5/13/1891 |
| 16. | George Davies | 8/18/1891 |
| 17. | Tim Donahue | 7/28/1891 |
| 18. | Alexander Donoghue | 8/24/1891 |
| 19. | John Doran | 4/11/1891 |
| 20. | Tommy Dowd | 4/8/1891 |
| 21. | Martin Duke | 8/24/1891 |
| 22. | Bill Eagan | 4/8/1891 |
| 23. | Warren Fitzgerald | 6/4/1891 |
| 24. | John Fitzgerald | 7/18/1891 |
| 25. | Mike Flynn | 8/31/1891 |
| 26. | George Fox | 7/13/1891 |
| 27. | Buck Freeman | 6/27/1891 |
| 28. | Harry Fuller | 9/19/1891 |
| 29. | Joe Gormley | 6/16/1891 |
| 30. | Billy Graulich | 9/17/1891 |
| 31. | Clark Griffith | 4/11/1891 |
| 32. | Tom Hart | 4/15/1891 |
| 33. | Jim Hughey | 9/29/1891 |
| 34. | Bert Inks | 9/2/1891 |
| 35. | Hughie Jennings | 6/1/1891 |
| 36. | Jack Keenan | 8/11/1891 |
| 37. | Joe Kelley | 7/27/1891 |
| 38. | Henry Killeen | 9/11/1891 |
| 39. | Frank Killen | 8/27/1891 |
| 40. | Bill Kling | 8/13/1891 |
| 41. | Fred Lake | 5/7/1891 |
| 42. | Dan Lally | 8/19/1891 |
| 43. | Jack Leiper | 9/4/1891 |
| 44. | Tom Letcher | 9/27/1891 |
| 45. | Pete Lohman | 5/11/1891 |
| 46. | Jim Long | 8/9/1891 |
| 47. | John Lyston | 8/29/1891 |
| 48. | Harry Mace | 5/5/1891 |
| 49. | Charles Matthews | 9/25/1891 |
| 50. | John McGraw | 8/26/1891 |
| 51. | Mart McQuaid | 8/15/1891 |
| 52. | Paul McSweeney | 9/20/1891 |
| 53. | Jouett Meekin | 6/13/1891 |
| 54. | Bill Merritt | 8/8/1891 |
| 55. | Harry Morelock | 8/21/1891 |
| 56. | Larry Murphy | 5/30/1891 |
| 57. | John Newell | 7/22/1891 |
| 58. | John O'Brien | 7/25/1891 |
| 59. | John O'Connell | 8/22/1891 |
| 60. | Pat Pettee | 4/8/1891 |
| 61. | Walter Plock | 8/21/1891 |
| 62. | Bill Quarles | 5/21/1891 |
| 63. | Frank Quinlan | 10/5/1891 |
| 64. | Nick Reeder | 4/11/1891 |
| 65. | George Rettger | 8/13/1891 |
| 66. | John Ricks | 9/21/1891 |
| 67. | George Rooks | 5/12/1891 |
| 68. | Phil Saylor | 7/11/1891 |
| 69. | John Schultz | 5/6/1891 |
| 70. | John Schulze | 8/7/1891 |
| 71. | John Shearon | 7/28/1891 |
| 72. | John Slagle | 4/30/1891 |
| 73. | Ed Spurney | 6/26/1891 |
| 74. | Jim Sullivan | 4/22/1891 |
| 75. | Jack Taylor | 9/16/1891 |
| 76. | Joe Walsh | 9/3/1891 |
| 77. | Jack Wentz | 4/15/1891 |
| 78. | Bill Zies | 8/9/1891 |
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