| Pl | Athlete | Time | Heat (pl) | React | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Bryce DEADMON Texas A&M [SR] | 44.57 | Q | 1 (1) | 0.183 | ||||
| 2 |  | Michael BLUTH BYU [JR] | 45.13 | Q | 1 (2) | 0.247 | PB | |||
| 3 |  | Sean BAILEY UTEP [SR] | 45.31 | Q | 2 (1) | 0.161 | ||||
| 4 |  | Jonathan JONES Texas [SO] | 45.45 | Q | 3 (1) | 0.232 | ||||
| 5 |  | Wayne LAWRENCE JR. Iowa [SO] | 45.49 | Q | 2 (2) | 0.251 | ||||
| 6 |  | Brian HERRON USC [SO] | 45.55 | Q | 2 (3) | 0.158 | PB | |||
| 7 |  | Auhmad ROBINSON Stephen F. Austin [FR] | 45.61 | Q | 1 (3) | 0.252 | PB | |||
| 8 |  | Ismail TURNER UCLA [SO] | 45.64 | q | 1 (4) | 0.183 | PB | |||
| 9 |  | Howard FIELDS III Baylor [JR] | 45.67 | Q | 3 (2) | 0.220 | ||||
| 10 |  | Johnnie BLOCKBURGER Arizona [FR] | 45.72 | q | 2 (4) | 0.210 | ||||
| 11 |  | Ashton HICKS Oklahoma State [SO] | 45.73 | Q | 3 (3) | 0.211 | SB | |||
| 12 | | Maj WILLIAMS Arizona [JR] | 45.76 | q | 2 (5) | 0.185 | PB | |||
| 13 |  | Derrick MOKALENG TCU [SR] | 46.31 | 1 (5) | 0.174 | |||||
| 14 | | Omajuwa ETIWE Texas A&M [FR] | 46.32 | 2 (6) | 0.167 | PB | ||||
| 15 | | Jon MAAS Texas [JR] | 46.45 | 2 (7) | 0.229 | |||||
| 16 | | Nicholas RAMEY USC [SO] | 46.47 | 3 (4) | 0.221 | PB | ||||
| 17 |  | Rhayko SCHWARTZ Arkansas [SR] | 46.72 | 1 (6) | 0.266 | |||||
| 18 |  | Ben PSICIHULIS Minnesota [JR] | 46.74 | 2 (8) | 0.197 | |||||
| 19 |  | Tyrell VALENTINE Houston [JR] | 46.78 | 1 (7) | 0.278 | |||||
| 20 | | Jermaine HOLT Houston [SR] | 47.17 | 3 (5) | 0.248 | |||||
| 21 |  | Willie JOHNSON Southern Illinois [FR] | 47.20 | 1 (8) | 0.259 | |||||
| 22 | | Matthys NORTJE Texas [FR] | 47.21 | 3 (6) | 0.201 | |||||
| 23 | | Willington WRIGHT Texas [JR] | 47.29 | 3 (7) | 0.256 | |||||
| 24 | | James MILHOLEN Arkansas [SO] | 47.80 | 3 (8) | 0.170 |