| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1385 | Kerron Clement |
USA
|
48.35 Q | 0.156 |
| 2 | 1216 | Karsten WARHOLM |
NOR
|
48.43 Q | 0.175 |
| 3 | 844 | Juander SANTOS |
DOM
|
48.59 q PB | 0.192 |
| 4 | 1092 | Kemar MOWATT |
JAM
|
48.66 q | 0.204 |
| 5 | 606 | Abdelmalik LAHOULOU |
ALG
|
49.33 | 0.186 |
| 6 | 1236 | Patryk DOBEK |
POL
|
49.40 | 0.158 |
| 7 | 922 | Victor COROLLER |
FRA
|
55.69 | 0.170 |
| 1053 | Thomas BARR |
IRL
|
DNS |
| POS | BIB | ATHLETE | COUNTRY | MARK | ms* | Reaction Time |
|---|---|---|---|---|---|---|
| 1 | 1405 | TJ HOLMES |
USA
|
49.12 Q | 0.187 | |
| 2 | 1298 | Kariem HUSSEIN |
SUI
|
49.13 Q | 0.147 | |
| 3 | 1087 | Jaheel HYDE |
JAM
|
49.75 | 0.157 | |
| 4 | 959 | Jack Green |
GBR
|
49.93 | .927 | 0.230 |
| 5 | 1101 | Takatoshi ABE |
JPN
|
49.93 | .929 | 0.212 |
| 6 | 928 | Mamadou Kasse HANN |
FRA
|
50.35 | 0.165 | |
| 7 | 1137 | Aron Kipchumba KOECH |
KEN
|
50.40 | 0.174 | |
| 8 | 882 | Jaak-Heinrich Jagor |
EST
|
50.43 | 0.149 |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1268 | Abderrahman Almoubarrake S ALSALECK |
QAT
|
48.75 Q | 0.247 |
| 2 | 1345 | Yasmani COPELLO |
TUR
|
48.91 Q | 0.203 |
| 3 | 1394 | Eric Futch |
USA
|
49.30 | 0.150 |
| 4 | 942 | Ludvy VAILLANT |
FRA
|
49.95 | 0.205 |
| 5 | 1060 | José Reynaldo Bencosme De Leon |
ITA
|
50.29 | 0.186 |
| 6 | 1079 | Ricardo Cunningham |
JAM
|
50.54 | 0.216 |
| 628 | Guillermo Ruggeri |
ARG
|
DQ | 0.198 | |
| 731 | Marcio TELES |
BRA
|
DNF | 0.175 |