| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 844 | Bershawn Jackson |
USA
|
50.77 Q | 0.156 |
| 2 | 331 | Steven Green |
GBR
|
51.12 Q | 0.182 |
| 3 | 283 | Jussi Heikkilä |
FIN
|
51.35 q | 0.132 |
| 4 | 488 | Jun Hamada |
JPN
|
52.28 | 0.227 |
| 5 | 92 | Andrey Kozlovskiy |
BLR
|
52.47 | 0.149 |
| 6 | 588 | Ouadih Naciri |
MAR
|
52.73 | 0.158 |
| 7 | 549 | Ibrahim Al-Hamaidi |
KSA
|
53.23 | 0.176 |
| 8 | 362 | Lars-Birger Hense |
GER
|
53.28 | 0.167 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 713 | L.J. van Zyl |
RSA
|
51.05 Q | 0.151 |
| 2 | 472 | Gregory Little |
JAM
|
51.63 Q | 0.168 |
| 3 | 339 | Rhys Williams |
GBR
|
51.68 PB | 0.201 |
| 4 | 294 | Mahmed Atig |
FRA
|
52.30 | 0.174 |
| 5 | 662 | Marcin Joachimiak |
POL
|
52.57 | 0.185 |
| 6 | 522 | Daniel Kibet |
KEN
|
52.84 | 0.184 |
| 7 | 554 | Idris Abdelaziz Al-Housaoui |
KSA
|
52.91 | 0.165 |
| 8 | 37 | Elliott Wood |
AUS
|
53.24 | 0.152 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 837 | Kenneth Ferguson |
USA
|
50.90 Q | 0.220 |
| 2 | 518 | Julius Bungei |
KEN
|
51.10 Q | 0.169 |
| 3 | 171 | Shibao Zhang |
CHN
|
51.23 q | 0.240 |
| 4 | 35 | Tobby Sutherland |
AUS
|
51.78 | 0.185 |
| 5 | 348 | David Busch |
GER
|
53.13 | 0.158 |
| 6 | 397 | Mihaíl Markópoulos |
GRE
|
54.41 | 0.162 |
| 7 | 130 | Levy Ouedraogo |
BUR
|
55.73 | 0.189 |
| 415 | Ákos Dezsö |
HUN
|
DNF | 0.173 |