Pos | Rank | Heat | Bib | Athlete | Mark | Details | Reaction Time | |
|---|---|---|---|---|---|---|---|---|
1 | 1 | 3 | 2045 | JPN | 49.19 | Q | 0.151 | |
2 | 1 | 1 | 2424 | USA | 49.48 | Q | 0.149 | |
3 | 2 | 3 | 2251 | RSA | 49.66 | Q | 0.147 | |
4 | 1 | 2 | 1714 | CZE | 49.67 | Q | 0.160 | |
5 | 2 | 1 | 2035 | JAM | 49.98 PB | Q | 0.180 | |
6 | 3 | 1 | 1718 | CZE | 50.22 | Q | 0.189 | |
7 | 3 | 3 | 2386 | USA | 50.47 | Q | 0.188 | |
8 | 2 | 2 | 2234 | RSA | 50.50 | Q | 0.184 | |
9 | 3 | 2 | 1964 | IRL | 50.53 | Q | 0.162 | |
10 | 4 | 1 | 1687 | COL | 50.54 PB | 0.165 | ||
11 | 4 | 2 | 1838 | GBR | 50.59 PB | 0.166 | ||
12 | 5 | 1 | 1995 | ITA | 50.64 PB | 0.171 | ||
13 | 4 | 3 | 1617 | BRA | 50.88 | 0.144 | ||
14 | 5 | 3 | 2026 | JAM | 50.89 | 0.149 | ||
15 | 6 | 1 | 1750 | ESP | 50.95 | 0.153 | ||
16 | 7 | 1 | 1970 | IRL | 51.28 PB | 0.200 | ||
17 | 6 | 3 | 2101 | KSA | 51.29 | 0.177 | ||
18 | 7 | 3 | 1744 | ESP | 51.33 | 0.174 | ||
19 | 8 | 3 | 1686 | COL | 51.43 PB | 0.149 | ||
20 | 8 | 1 | 1655 | CAN | 51.44 | 0.153 | ||
21 | 5 | 2 | 1572 | BAR | 51.72 | 0.166 | ||
22 | 6 | 2 | 1729 | ECU | 51.73 | 0.215 | ||
23 | 7 | 2 | 2220 | PUR | 51.76 | 0.146 | ||
24 | 9 | 3 | 2341 | TTO | 52.14 | 0.144 | ||
25 | 9 | 1 | 2134 | MEX | 52.31 | 0.139 | ||
26 | 8 | 2 | 2044 | JPN | 52.37 | 0.189 | ||
27 | 9 | 2 | 2121 | MAR | 54.08 | 0.194 |