| 1. | | Jeshua Anderson | 48.47a | So | WA | Washington State | NCAA Division I Championships | Sat, Jun 13 |
| 2. | | Johnny Dutch | 48.58a | So | SC | South Carolina | SEC Outdoor Championships | Sun, May 17 |
| 3. | | Justin Gaymon | 48.86a | Sr | GA | Georgia | SEC Outdoor Championships | Sun, May 17 |
| 4. | | William Wynne | 49.67a | Fr | FL | Florida | Pepsi Florida Relays | Sat, Apr 4 |
| | Joe Greene | 49.67a | Sr | NY | Albany | NCAA Division I Championships | Sat, Jun 13 |
| 6. | | Kirkland Thornton | 49.77a | Sr | NE | Nebraska | NCAA Midwest Regional | Sat, May 30 |
| 7. | | Bryce Brown | 49.81a | Fr | TX | South Plains | NJCAA Championships | Sat, May 23 |
| 8. | | Leslie Murray | 49.83a | Fr | DE | Delaware State | NCAA Division I Championships | Sat, Jun 13 |
| 9. | | Lee Moore | 49.87a | Fr | MS | Mississippi | NCAA Division I Championships | Sat, Jun 13 |
| 10. | | Alie Beauvais | 49.99a | Jr | NY | Albany | IC4A Championships | Sun, May 17 |
| | Javier Garcia Tunon | 49.99a | Sr | FL | Florida State | NCAA Division I Championships | Sat, Jun 13 |
| 12. | | Emmanuel Mayers | 50.06a | So | MS | Mississippi State | NCAA Division I Championships | Sat, Jun 13 |
| 13. | | Amaechi Morton | 50.11a | Fr | CA | Stanford | Big Meet | Sat, Apr 18 |
| 14. | | Toby Ulm | 50.23a | Fr | DC | Georgetown | NCAA Division I East Regional | Sat, May 30 |
| 15. | | Lane Dennis | 50.25a | Sr | TX | Sam Houston State | NCAA Midwest Regional | Sat, May 30 |
| 16. | | Jake Hanson | 50.32a | Sr | CA | UC Berkeley | Pac-10 Championships | Sun, May 17 |
| 17. | | Carlyle Thompson | 50.36a | So | KS | Allen County | NJCAA Championships | Sat, May 23 |
| 18. | | Adam Dailey | 50.48a | So | NE | Nebraska | Big 12 Outdoor Championships | Sun, May 17 |
| 19. | | Ray Varner | 50.54a | Jr | IA | Iowa | NCAA Midwest Regional | Sat, May 30 |
| 20. | | Barry Leavitt | 50.55a | Sr | WA | Washington State | NCAA Division I Championships | Sat, Jun 13 |
| 21. | | Cory Goos | 50.59a | Jr | IA | Northern Iowa | NCAA Division I Championships | Sat, Jun 13 |
| | Dan Harmsen | 50.59a | Fr | MI | Michigan | NCAA Mideast Regional | Sat, May 30 |
| 23. | | Alexander Wilright | 50.60a | So | CA | UC Davis | Cal/Nevada Championships Day 2 | Sun, Mar 29 |
| 24. | | Nick Karren | 50.73a | Sr | UT | Utah State | BYU Tri Meet | Sat, May 2 |
| 25. | | David Klech | 50.75a | So | OR | Oregon | Stanford Invitational | Sat, Mar 28 |
| | Jussi Heikkila | 50.75a | - | SC | South Carolina | UNC Elite Meet | Fri, May 8 |
| | Allan Ayala | 50.75a | Jr | ND | Dickinson State | NAIA National Championships | Sat, May 23 |
| 28. | | Duane Walker | 50.78a | Fr | CA | USC | Pac-10 Championships | Sun, May 17 |
| 29. | | Carl Buchanon | 50.82a | Fr | MI | Michigan | NCAA Mideast Regional | Sat, May 30 |
| 30. | | Javi Garcia-Tunon | 50.90a | Sr | FL | Florida State | Clyde Littlefield Texas Relays | Sat, Apr 4 |
| | Patrick Lee | 50.90a | Sr | LA | LSU | NCAA Mideast Regional | Sat, May 30 |
| | Greg Offerman | 50.90a | Sr | IA | Northern Iowa | NCAA Midwest Regional | Sat, May 30 |
| 33. | | Kendrick Young | 50.93a | So | CA | Fresno State | WAC Outdoor Championships | Sat, May 16 |
| 34. | | Kenneth Medwood | 50.94a | Jr | CA | Long Beach State | Cal/Nevada Championships Day 2 | Sun, Mar 29 |
| 35. | | Thomas Phillips | 50.96a | So | CA | UC Davis | Brutus Hamilton Invitational | Sat, Apr 25 |
| 36. | | Jason Mitchell | 50.99a | Sr | TX | Prairie View A&M | NCAA Midwest Regional | Sat, May 30 |
| | Nick Makukutu | 50.99a | So | NE | Nebraska | Nebraska Quad | Sat, May 2 |
| 38. | | Val-Pierre Dai'Re | 51.00a | Jr | CA | Fresno State | Brutus Hamilton Invitational | Sat, Apr 25 |
| 39. | | Glenn Fowler | 51.05a | Sr | FL | South Florida | Big East Championships | Sun, May 3 |
| | Carson Blanks | 51.05a | Fr | MS | Mississippi | SEC Outdoor Championships | Sun, May 17 |
| 41. | | Jamele Mason | 51.10a | Fr | TX | Texas Tech | Texas Tech Invitational | Thu, May 7 |
| | Samuel Jeter | 51.10a | Fr | CA | Riverside City College | So Cal Finals | Sat, May 9 |
| 43. | | Anthony Burris | 51.11a | Jr | CT | Connecticut | Big East Championships | Sun, May 3 |
| 44. | | Lehann Fourie | 51.22a | So | NE | Nebraska | Big 12 Outdoor Championships | Sun, May 17 |
| 45. | | Zach Dawson | 51.24a | Jr | OK | Oklahoma | Sooner Twilight | Sat, May 9 |
| 46. | | Harold Sims | 51.26a | Jr | NC | Campbell | NCAA Division I East Regional | Sat, May 30 |
| 47. | | Marcus Pope | 51.27a | Fr | CA | Mt SAC | California Junior College State Championships | Sat, May 16 |
| 48. | | Cory Beebe | 51.28a | Jr | MD | Salisbury | NCAA Division III National Championships | Sat, May 23 |
| 49. | | Eric Bailey | 51.30a | So | OK | Oklahoma | NCAA Midwest Regional | Sat, May 30 |
| 50. | | Bryan Payne | 51.31a | Jr | UT | BYU | Utah Twilight | Wed, May 6 |
| 51. | | Nick Dodson | 51.33a | So | GA | Shorter | NAIA National Championships | Sat, May 23 |
| 52. | | Tim O'Donnell | 51.35a | Sr | VA | Liberty | Big South Outdoor Championships | Sat, Apr 18 |
| | Chris Davis | 51.35a | So | MO | Missouri | NCAA Mideast Regional | Sat, May 30 |
| 54. | | Balazs Molnar | 51.37a | Jr | IN | Notre Dame | Big East Championships | Sun, May 3 |
| | Kelton Cumberbatch | 51.37a | Sr | NY | Manhattan | IC4A Championships | Sun, May 17 |
| 56. | | Roscoe Payne | 51.41a | Fr | TN | Middle Tennessee State | Sun Belt Championships | Sun, May 10 |
| | Mikel Thomas | 51.41a | Sr | KY | Kentucky | SEC Outdoor Championships | Sun, May 17 |
| 58. | | Cedrique Smith | 51.42a | Fr | CA | Azusa Pacific | NAIA National Championships | Sat, May 23 |
| 59. | | Zach Plinario | 51.43a | Jr | TX | Texas Tech | NCAA Midwest Regional | Sat, May 30 |
| 60. | | Aundrea Williams | 51.46a | Jr | TX | Texas-Arlington | NCAA Midwest Regional | Sat, May 30 |
| 61. | | Cody Wisslead | 51.48a | So | IL | Illinois | Big Ten Outdoor Championships | Sun, May 17 |
| 62. | | Josh Streeter | 51.49a | Sr | CO | Adams State | RMAC Championships | Tue, May 5 |
| | Shane Brathwaite | 51.49a | Fr | AZ | Central Arizona | NJCAA Region I Championships | Thu, May 14 |
| 64. | | Daniel Kinney | 51.52a | Sr | DC | Howard | NCAA Division I East Regional | Sat, May 30 |
| 65. | | Jason Perez | 51.54a | So | TX | Houston | Conference USA Championships | Sat, May 16 |
| 66. | | Richard Lowe | 51.55a | So | TN | Memphis | Memphis Tiger Invitational | Sat, Apr 18 |
| 67. | | Taylor Pebley | 51.56a | Jr | UT | Weber State | BYU Tri Meet | Sat, May 2 |
| | Paul Steinke | 51.56a | Jr | NC | Gardner-Webb | Georgia Tech Invitational | Sat, May 16 |
| 69. | | J Hopkins | 51.57a | Fr | WA | Washington State | The Beach Invitational | Sat, Apr 18 |
| 70. | | John Hewitt | 51.58a | Jr | TN | Tennessee | SEC Outdoor Championships | Sun, May 17 |
| | Thaddeus Gordon | 51.58a | Jr | TX | Baylor | NCAA Midwest Regional | Sat, May 30 |
| 72. | | Eric Lund | 51.59a | So | NE | Nebraska | Nebraska Quad | Sat, May 2 |
| 73. | | Virgil Mitchell | 51.61a | So | NE | Doane | NAIA National Championships | Sat, May 23 |
| 74. | | David Aristil | 51.64a | Fr | FL | South Florida | LSU Alumni Gold | Sat, Apr 18 |
| 75. | | Chris Titsworth | 51.66a | Sr | AZ | Arizona | NCAA West Regional | Sat, May 30 |
| 76. | | Gordon Smith | 51.67a | Sr | NC | North Carolina A&T | MEAC Outdoor Championships | Sat, May 2 |
| | Trevor Habberstad | 51.67a | So | WA | Washington State | Pac-10 Championships | Sun, May 17 |
| 78. | | Mychal Word | 51.71a | Sr | LA | Louisiana-Monroe | LSU Alumni Gold | Sat, Apr 18 |
| 79. | | Roberto Archibold | 51.72a | Jr | AZ | Arizona State | Arizona Double Dual | Sat, May 2 |
| 80. | | Lance Walker | 51.74a | Jr | UT | BYU | Utah Twilight | Wed, May 6 |
| 81. | | Cory Nelms | 51.75a | Jr | FL | Miami (FL) | Georgia Tech Invitational | Sat, May 16 |
| 82. | | Jordan Pitts | 51.76a | So | TX | Texas Christian | LSU Relays | Sat, Mar 28 |
| | Adlus Wiltz | 51.76a | Jr | LA | Southeast Louisiana | LSU Alumni Gold | Sat, Apr 18 |
| 84. | | Kyle Edmonds | 51.78a | Jr | CT | Connecticut | IC4A Championships | Sun, May 17 |
| 85. | | Eric Cray | 51.80a | So | FL | Bethune-Cookman | MEAC Outdoor Championships | Sat, May 2 |
| 86. | | Nigel Joseph | 51.82a | So | CO | Colorado State | NCAA Midwest Regional | Sat, May 30 |
| 87. | | Devon Watlington | 51.84a | Jr | NC | North Carolina-Wilmington | IC4A Championships | Sun, May 17 |
| 88. | | Alvin Miles | 51.89a | Sr | NC | St Augustine's | NCAA DII Championships | Sat, May 23 |
| 89. | | Norbert Miller | 51.90a | So | LA | Southern-New Orleans | NAIA National Championships | Sat, May 23 |
| 90. | | Lino Reyes | 51.92a | So | MS | Alcorn State | LSU Relays | Sat, Mar 28 |
| | Cylend Simmons | 51.92a | So | NE | Nebraska | John McDonnell Invitational | Sat, Apr 18 |
| 92. | | Marshall Ackley | 51.94a | Jr | OR | Oregon | Pac-10 Championships | Sun, May 17 |
| 93. | | Junior Hines | 51.98a | Fr | MO | Missouri Baptist | NAIA National Championships | Sat, May 23 |
| 94. | | Clark Coyle | 52.04a | Fr | AZ | Mesa | NJCAA Region I Championships | Thu, May 14 |
| 95. | | Dallas Beaty | 52.05a | Sr | ID | Northwest Nazarene | NCAA DII Championships | Sat, May 23 |
| 96. | | Adams Abdulrazaaq | 52.06a | So | VA | Virginia | ACC Outdoor Championships | Sat, Apr 18 |
| | Kevin Ahlstrom | 52.06a | Jr | UT | BYU | Mark Faldmo Invitational | Sat, Apr 18 |
| 98. | | Ben Zill | 52.07a | Jr | WI | Wisconsin-Oshkosh | NCAA Division III National Championships | Sat, May 23 |
| | Rob Skidmore | 52.07a | Jr | UT | BYU | BYU Robison Invitational | Sat, Apr 25 |
| 100. | | Kris Gehrke | 52.09a | Jr | IL | Eastern Illinois | Ohio Valley Conference Championships | Sat, May 2 |
| 101. | | Jeremy Jones | 52.10a | Sr | TX | Angelo State | NCAA DII Championships | Sat, May 23 |
| 102. | | D'Korian Ford | 52.12a | Fr | TX | Houston | Conference USA Championships | Sat, May 16 |
| 103. | | Marcelles Atkinson | 52.15a | So | LA | Louisiana Tech | WAC Outdoor Championships | Sat, May 16 |
| 104. | | Justin Grinstead | 52.16a | Jr | MA | Harvard | Heptagonals | Sun, May 10 |
| 105. | | Darryl Elston | 52.19a | Sr | AZ | Arizona State | ASU Invitational | Sat, Mar 28 |
| 106. | | Marcus Evans | 52.20a | Jr | IL | Southern Illinois-Edwardsville | Memphis Tiger Invitational | Sat, Apr 18 |
| | Tyrell Ross | 52.20a | Jr | NE | Nebraska | Big 12 Outdoor Championships | Sun, May 17 |
| 108. | | Kevin Ott Wright | 52.21a | Sr | CA | CS San Marcos | Mangrum Invitational | Sat, Apr 4 |
| 109. | | Jhak Keegan | 52.22a | Sr | AL | Auburn | SEC Outdoor Championships | Sun, May 17 |
| | Eric Alejandro | 52.22a | - | MI | Eastern Michigan | University of Windsor Open | Sat, May 16 |
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(Total stats: 2,303)
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