| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Nduka Awazie |  NGR | 46.76 Q | |
| 2 | Ousmane Niang |  SEN | 47.01 Q PB | |
| 3 | Fawzi Dahash Al Shammari |  KUW | 47.42 Q | |
| 4 | Sanjay Ayre |  JAM | 47.51 | |
| 5 | Michal Weglarski |  POL | 47.57 PB | |
| 6 | Casper Pule |  SOL | 49.65 PB | |
| 7 | Charles Shaw |  LBR | 51.32 | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Andrew Pierce |  USA | 46.51 Q | 0.017 | 
| 2 | Tomas Coman |  IRL | 47.14 Q NR | 0.017 | 
| 3 | Daniel Batman |  AUS | 47.17 Q | 0.021 | 
| 4 | David Naismith |  GBR | 47.47 q | 0.017 | 
| 5 | Ranga Wimalawansa |  SRI | 47.55 NR | 0.018 | 
| 6 | Mohamed Bezegrari |  ALG | 49.39 | 0.016 | 
| Katambwe Musongela |  COD | DNS | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Hamdan Odha Al-Bishi |  KSA | 46.93 Q | |
| 2 | Evanson Ndungu |  KEN | 47.04 Q | |
| 3 | Ruwen Faller |  GER | 47.08 Q | |
| 4 | Fernando Augustin |  MRI | 47.31 q PB | |
| 5 | Paul Opperman |  IRL | 47.81 | |
| 6 | Alexandar Petrov |  BUL | 48.72 | |
| 7 | Isaac Yaya |  PYF | 50.10 PB | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Alloy Wilson |  GBR | 46.81 Q PB | |
| 2 | Zizhou Xu |  CHN | 46.92 Q | |
| 3 | Simon Pierre |  TTO | 46.99 Q | |
| 4 | Masayuki Okusako |  JPN | 47.37 q | |
| 5 | Ahmed Torkhani |  TUN | 48.08 | |
| 6 | Damián Gustavo Spector |  ARG | 48.35 | |
| 7 | Harmon Harmon |  COK | 51.82 | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Casey Vincent |  AUS | 46.87 Q | 0.023 | 
| 2 | LuÃs Freitas |  POR | 47.66 Q | 0.017 | 
| 3 | William Hernández |  VEN | 47.81 Q | 0.014 | 
| 4 | Takahiko Yamamura |  JPN | 47.95 | 0.026 | 
| 5 | Andrea Barberi |  ITA | 47.96 | 0.031 | 
| 6 | Ryad Cheragui |  ALG | 49.77 | 0.018 | 
| Papy Stone Seke Moundele |  CGO | DNS | ||
| Bashir Mohamed Al Khewani |  YEM | DNS | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Jae-Da Kim |  KOR | 47.17 Q | |
| 2 | Marc Alexander Scheer |  GER | 47.27 Q | |
| 3 | Przemyslaw Dunaj |  POL | 48.08 Q | |
| 4 | Marc Reuter |  LUX | 48.28 | |
| 5 | Vicente Lucindo Erut |  ARG | 49.14 | |
| 6 | Edward Grech |  MLT | 51.21 | |
| Anastásios Goúsis |  GRE | DNS | 
| POS | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|
| 1 | Tony Berrian |  USA | 47.06 Q | |
| 2 | Amin Badany Goma'a |  EGY | 47.57 Q PB | |
| 3 | Liam Card |  CAN | 47.71 Q | |
| 4 | Tshepo Thobelangope |  RSA | 47.90 | |
| 5 | Micham Mihjane |  MAR | 48.03 NR | |
| 6 | Clement Abai |  PNG | 48.41 | |
| 7 | Troy Wickham |  BAR | 48.65 |