| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 233 | Bralon TAPLIN |  GRN | 45.38 Q | 0.192 | 
| 2 | 350 | Deon LENDORE |  TTO | 46.23 Q | 0.198 | 
| 3 | 269 | Boniface Ontuga MWERESA |  KEN | 46.33 Q SB | 0.209 | 
| 4 | 161 | Nery Brenes |  CRC | 46.49 SB | 0.155 | 
| 5 | 376 | Kyle Clemons |  USA | 46.91 | 0.197 | 
| 337 | Luka JANEŽIČ |  SLO | DQ R163.3(b) | 0.185 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 200m | 21.52 |  Bralon TAPLIN |  GRN | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 171 | Pavel MASLÁK |  CZE | 45.71 Q | 0.181 | 
| 2 | 321 | Abdalelah Haroun |  QAT | 45.71 Q SB | 0.208 | 
| 3 | 349 | Lalonde Gordon |  TTO | 46.03 Q | 0.127 | 
| 4 | 358 | Yavuz CAN |  TUR | 46.82 | 0.204 | 
| 5 | 114 | Alonzo RUSSELL |  BAH | 47.07 | 0.237 | 
| 6 | 248 | Fitzroy Dunkley |  JAM | 47.13 | 0.170 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 200m | 21.49 |  Pavel MASLÁK |  CZE |