| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 580 | Kirani JAMES |
GRN
|
44.16 Q | 0.143 |
| 2 | 410 | LuguelÃn SANTOS |
DOM
|
44.26 Q NR | 0.175 |
| 3 | 1067 | David Verburg |
USA
|
44.71 | 0.178 |
| 4 | 216 | Kévin BORLÉE |
BEL
|
44.74 SB | 0.158 |
| 5 | 943 | Renny QUOW |
TTO
|
44.98 | 0.189 |
| 6 | 1050 | Vernon NORWOOD |
USA
|
45.07 | 0.182 |
| 7 | 189 | Chris Brown |
BAH
|
45.07 | 0.178 |
| 8 | 632 | Peter Matthews |
JAM
|
45.42 | 0.178 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 243 | Isaac MAKWALA |
BOT
|
44.11 Q | 0.212 |
| 2 | 715 | Youssef Ahmed MASRAHI |
KSA
|
44.40 Q | 0.144 |
| 3 | 520 | Rabah YOUSIF |
GBR
|
44.54 q PB | 0.142 |
| 4 | 940 | Lalonde Gordon |
TTO
|
44.70 | 0.150 |
| 5 | 1049 | Bryshon Nellum |
USA
|
44.77 | 0.169 |
| 6 | 631 | Rusheen MCDONALD |
JAM
|
44.86 | 0.208 |
| 7 | 194 | Steven GARDINER |
BAH
|
44.98 | 0.204 |
| 8 | 362 | Nery Brenes |
CRC
|
45.41 | 0.168 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 857 | Wayde VAN NIEKERK |
RSA
|
44.31 Q | 0.155 |
| 2 | 1047 | LaShawn Merritt |
USA
|
44.34 Q SB | 0.187 |
| 3 | 938 | Machel CEDENIO |
TTO
|
44.64 q | 0.219 |
| 4 | 627 | Javon FRANCIS |
JAM
|
44.77 | 0.177 |
| 5 | 217 | Jonathan BORLÉE |
BEL
|
44.85 | 0.158 |
| 6 | 521 | Martyn ROONEY |
GBR
|
45.29 | 0.153 |
| 7 | 204 | Michael Mathieu |
BAH
|
45.43 | 0.157 |
| 8 | 759 | Liemarvin BONEVACIA |
NED
|
45.65 | 0.170 |