| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 3 | 1345 | Yasmani COPELLO |
TUR |
49.13 Q | |
| 2 | 1 | 4 | 844 | Juander SANTOS |
DOM |
49.19 Q | |
| 3 | 1 | 5 | 928 | Mamadou Kasse HANN |
FRA |
49.34 Q | |
| 4 | 1 | 2 | 1405 | TJ HOLMES |
USA |
49.35 Q | |
| 5 | 2 | 3 | 1268 | Abderrahman Almoubarrake S ALSALECK |
QAT |
49.39 Q | |
| 6 | 2 | 5 | 731 | Marcio TELES |
BRA |
49.41 Q | |
| 7 | 3 | 5 | 1236 | Patryk DOBEK |
POL |
49.42 Q | |
| 8 | 1 | 1 | 1385 | Kerron Clement |
USA |
49.46 Q | |
| 9 | 3 | 3 | 942 | Ludvy VAILLANT |
FRA |
49.49 Q | |
| 10 | 2 | 4 | 1216 | Karsten WARHOLM |
NOR |
49.50 Q | |
| 11 | 4 | 5 | 1137 | Aron Kipchumba KOECH |
KEN |
49.55 Q | .547 |
| 12 | 5 | 5 | 959 | Jack Green |
GBR |
49.55 q | .549 |
| 13 | 6 | 5 | 1394 | Eric Futch |
USA |
49.57 q | |
| 14 | 2 | 1 | 1101 | Takatoshi ABE |
JPN |
49.65 Q | |
| 15 | 3 | 4 | 628 | Guillermo Ruggeri |
ARG |
49.69 Q NR | |
| 16 | 2 | 2 | 1087 | Jaheel HYDE |
JAM |
49.72 Q | |
| 17 | 3 | 2 | 606 | Abdelmalik LAHOULOU |
ALG |
49.78 Q | |
| 18 | 4 | 2 | 1053 | Thomas BARR |
IRL |
49.79 Q | .782 |
| 19 | 4 | 3 | 1060 | José Reynaldo Bencosme De Leon |
ITA |
49.79 Q | .789 |
| 20 | 3 | 1 | 882 | Jaak-Heinrich Jagor |
EST |
49.81 Q | |
| 21 | 4 | 4 | 1079 | Ricardo Cunningham |
JAM |
49.91 Q | |
| 22 | 4 | 1 | 1092 | Kemar MOWATT |
JAM |
50.00 Q | .991 |
| 23 | 5 | 4 | 922 | Victor COROLLER |
FRA |
50.00 q | .998 |
| 24 | 5 | 3 | 1298 | Kariem HUSSEIN |
SUI |
50.12 q | |
| 25 | 5 | 1 | 722 | Hederson Estefani |
BRA |
50.22 | |
| 26 | 6 | 3 | 801 | Jordin ANDRADE |
CPV |
50.32 | |
| 27 | 6 | 1 | 1262 | Javier Culson |
PUR |
50.33 | |
| 28 | 5 | 2 | 1108 | Yusuke Ishida |
JPN |
50.35 | |
| 29 | 6 | 2 | 1068 | Lorenzo Vergani |
ITA |
50.37 | |
| 30 | 7 | 5 | 866 | Sergio FERNÁNDEZ |
ESP |
50.38 | |
| 31 | 6 | 4 | 1109 | Ryo KAJIKI |
JPN |
51.36 | |
| 32 | 7 | 3 | 1191 | Creve Armando MACHAVA |
MOZ |
51.71 | |
| 33 | 7 | 1 | 811 | José Luis Gaspar |
CUB |
51.82 | |
| 34 | 8 | 5 | 1226 | Mehboob Ali |
PAK |
52.24 | |
| 35 | 7 | 2 | 1232 | Ephraim Lerkin |
PNG |
52.36 | |
| 36 | 8 | 1 | 854 | Pablo Andres IBAÑEZ GUEVARA |
ESA |
52.72 | |
| 4 | 1229 | Eric CRAY |
PHI |
DQ | |||
| 4 | 1440 | Michael Stigler |
USA |
DQ | |||
| 2 | 1070 | Kyron MCMASTER |
IVB |
DQ | |||
| 3 | 887 | Rasmus MÄGI |
EST |
DNS |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second