| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 705 | Bonface Mucheru |
KEN
|
48.29 Q PB | 0.165 |
| 2 | 1005 | Kerron Clement |
USA
|
48.50 Q | 0.170 |
| 3 | 863 | Timofey Chalyy |
RUS
|
48.69 PB | 0.178 |
| 4 | 599 | Thomas BARR |
IRL
|
48.71 | 0.196 |
| 5 | 454 | Rasmus MÄGI |
EST
|
48.76 | 0.132 |
| 6 | 158 | Abdelmalik LAHOULOU |
ALG
|
48.87 NR | 0.188 |
| 7 | 643 | Annsert Whyte |
JAM
|
48.90 SB | 0.181 |
| 8 | 222 | Michaël Bultheel |
BEL
|
49.66 | 0.152 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 870 | Denis Kudryavtsev |
RUS
|
48.23 Q PB | 0.153 |
| 2 | 202 | Jeffery Gibson |
BAH
|
48.37 Q NR | 0.171 |
| 3 | 794 | Patryk DOBEK |
POL
|
48.40 q PB | 0.193 |
| 4 | 956 | Yasmani COPELLO |
TUR
|
48.46 q NR | 0.225 |
| 5 | 1012 | Johnny Dutch |
USA
|
48.74 | 0.178 |
| 6 | 860 | L.J. van Zyl |
RSA
|
48.89 | 0.177 |
| 7 | 693 | Aron Kipchumba KOECH |
KEN
|
49.54 | 0.155 |
| 8 | 327 | Wen Cheng |
CHN
|
49.62 | 0.169 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1063 | Michael Tinsley |
USA
|
48.47 Q | 0.156 |
| 2 | 679 | Nicholas BETT |
KEN
|
48.54 Q | 0.170 |
| 3 | 911 | Kariem HUSSEIN |
SUI
|
48.59 | 0.153 |
| 4 | 518 | Niall Flannery |
GBR
|
49.17 | 0.181 |
| 5 | 822 | Javier Culson |
PUR
|
49.36 | 0.186 |
| 6 | 628 | Leford Green |
JAM
|
49.59 | 0.173 |
| 7 | 754 | Kurt Couto |
MOZ
|
50.58 | 0.177 |
| 8 | 664 | Yuki MATSUSHITA |
JPN
|
51.10 | 0.181 |