| POS | Rank | Heat | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|
| 1 | 1 | 2 | Chris Brown |
BAH |
45.09 Q SB |
| 2 | 2 | 2 | Otis Harris |
USA |
45.11 Q |
| 3 | 1 | 7 | Michael Blackwood |
JAM |
45.23 Q |
| 4 | 2 | 7 | Hamdan Odha Al-Bishi |
KSA |
45.31 Q |
| 4 | 1 | 5 | Carlos Santa |
DOM |
45.31 Q |
| 6 | 1 | 1 | Alleyne Francique |
GRN |
45.32 Q |
| 7 | 3 | 2 | Eric Milazar |
MRI |
45.34 q |
| 8 | 2 | 5 | Lewis Banda |
ZIM |
45.37 Q |
| 9 | 1 | 8 | Leslie Djhone |
FRA |
45.40 Q |
| 10 | 1 | 4 | Derrick Brew |
USA |
45.41 Q |
| 11 | 1 | 3 | Yeimer López |
CUB |
45.44 Q |
| 12 | 2 | 3 | Alejandro Manuel Cárdenas |
MEX |
45.46 q |
| 13 | 3 | 5 | K. Mathews Binu |
IND |
45.48 q NR |
| 14 | 2 | 1 | Davian Clarke |
JAM |
45.54 Q |
| 15 | 1 | 6 | Jeremy Wariner |
USA |
45.56 Q |
| 16 | 3 | 3 | Gary Kikaya |
COD |
45.57 q |
| 17 | 2 | 8 | Ezra Sambu |
KEN |
45.59 Q |
| 17 | 3 | 7 | Saul Welgopwa |
NGR |
45.59 q |
| 19 | 2 | 4 | Brandon Simpson |
JAM |
45.61 Q |
| 20 | 3 | 8 | Timothy Benjamin |
GBR |
45.69 q |
| 21 | 4 | 5 | Cedric van Branteghem |
BEL |
45.70 q |
| 22 | 2 | 6 | Ingo Schultz |
GER |
45.88 Q |
| 22 | 4 | 7 | Matija Å estak |
SLO |
45.88 q |
| 22 | 5 | 5 | California Molefe |
BOT |
45.88 |
| 25 | 4 | 8 | Clinton Hill |
AUS |
45.89 |
| 26 | 3 | 1 | Marcus La Grange |
RSA |
45.95 |
| 27 | 3 | 6 | Young Talkmore Nyongani |
ZIM |
46.03 |
| 28 | 3 | 4 | Sofiane Labidi |
TUN |
46.04 |
| 29 | 4 | 2 | Casey Vincent |
AUS |
46.09 |
| 30 | 4 | 4 | Daniel Caines |
GBR |
46.15 |
| 31 | 5 | 7 | Yuki Yamaguchi |
JPN |
46.16 |
| 31 | 4 | 6 | Zsolt Szeglet |
HUN |
46.16 |
| 33 | 5 | 4 | Rohan Pradeep Kumara |
SRI |
46.20 |
| 34 | 4 | 1 | Piotr Klimczak |
POL |
46.23 |
| 35 | 5 | 6 | Malachi Davis |
GBR |
46.28 |
| 36 | 4 | 3 | Ato Stephens |
TTO |
46.29 |
| 37 | 5 | 2 | Vincent Mumo Kiilu |
KEN |
46.31 |
| 38 | 6 | 7 | Nagmeldin Ali Abubakr |
SUD |
46.32 |
| 39 | 5 | 1 | Jun Osakada |
JPN |
46.39 |
| 40 | 6 | 6 | Oleg Mishukov |
RUS |
46.41 |
| 41 | 6 | 2 | Andrés Silva |
URU |
46.48 |
| 42 | 5 | 8 | Adem Hecini |
ALG |
46.50 |
| 43 | 7 | 2 | Stilianós Dimótsios |
GRE |
46.51 SB |
| 44 | 5 | 3 | Mitsuhiro Sato |
JPN |
46.70 |
| 45 | 6 | 1 | Lloyd Zvasiya |
ZIM |
47.19 |
| 46 | 7 | 1 | David Canal |
ESP |
47.23 |
| 47 | 7 | 7 | Sajid Muhammad |
PAK |
47.45 SB |
| 48 | 7 | 6 | Dadi Denis |
HAI |
47.57 |
| 49 | 6 | 8 | Luis Luna |
VEN |
47.92 |
| 50 | 6 | 5 | Chris Lloyd |
DMA |
47.98 |
| 51 | 7 | 8 | Jonnie Lowe |
HON |
48.06 |
| 52 | 8 | 7 | Moses Kamut |
VAN |
48.14 SB |
| 53 | 6 | 4 | Evans Marie |
SEY |
48.23 PB |
| 54 | 7 | 5 | Fawzi Dahash Al Shammari |
KUW |
48.25 |
| 55 | 6 | 3 | Takeshi Fujiwara |
ESA |
48.46 |
| 56 | 8 | 8 | Anderson Jorge dos Santos |
BRA |
48.77 |
| 57 | 7 | 3 | Yoube Ould H'meïde |
MTN |
49.18 |
| 58 | 8 | 1 | Danilson Ricciuli |
GBS |
49.27 |
| 59 | 8 | 5 | Saeed Al-Adhreai |
YEM |
49.39 |
| 60 | 8 | 2 | Abdulla Mohamed Hussein |
SOM |
51.52 |
| 3 | Anton Galkin |
RUS |
DQ | ||
| 6 | Victor Kibet |
KEN |
DNF | ||
| 4 | Lezin Christian Elongo Ngoyikonda |
CGO |
DNS |