| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 491 | Takuya Fukunaga | 
                                         
                                        JPN
                                     | 
                                    47.30 Q | 0.144 | 
| 2 | 156 | Andre Wells | 
                                         
                                        BAH
                                     | 
                                    47.36 Q | 0.168 | 
| 3 | 833 | Najee Glass | 
                                         
                                        USA
                                     | 
                                    47.42 | 0.136 | 
| 4 | 129 | Jarryd Buchan | 
                                         
                                        AUS
                                     | 
                                    47.53 | 0.209 | 
| 5 | 518 | David Kipkemoi Chemjor | 
                                         
                                        KEN
                                     | 
                                    47.90 | 0.191 | 
| 6 | 681 | Lorenzo Adams | 
                                         
                                        RSA
                                     | 
                                    48.01 | 0.153 | 
| 7 | 706 | Timofey Chalyy | 
                                         
                                        RUS
                                     | 
                                    48.45 | 0.214 | 
| 8 | 587 | José de Jesús Fraire | 
                                         
                                        MEX
                                     | 
                                    49.60 | 0.279 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 835 | Arman Hall | 
                                         
                                        USA
                                     | 
                                    46.70 Q | 0.152 | 
| 2 | 641 | Patryk DOBEK | 
                                         
                                        POL
                                     | 
                                    47.19 Q PB | 0.198 | 
| 3 | 348 | Thomas JORDIER | 
                                         
                                        FRA
                                     | 
                                    47.27 PB | 0.169 | 
| 4 | 190 | Carlos Eduardo Grachet | 
                                         
                                        BRA
                                     | 
                                    47.58 PB | 0.166 | 
| 5 | 362 | Alex Boyce | 
                                         
                                        GBR
                                     | 
                                    47.96 | 0.200 | 
| 6 | 532 | Dongbaek Choi | 
                                         
                                        KOR
                                     | 
                                    48.18 | 0.169 | 
| 7 | 135 | Jack Sheridan | 
                                         
                                        AUS
                                     | 
                                    49.39 | 0.151 | 
| 8 | 254 | Mateo RUŽIĆ | 
                                         
                                        CRO
                                     | 
                                    50.57 | 0.150 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 521 | Alphas Leken KISHOYIAN | 
                                         
                                        KEN
                                     | 
                                    46.52 Q | |
| 2 | 752 | Sadam Suliman KOUMI EL NOUR | 
                                         
                                        SUD
                                     | 
                                    47.08 Q | 0.185 | 
| 3 | 785 | Machel CEDENIO | 
                                         
                                        TTO
                                     | 
                                    47.12 q | 0.268 | 
| 4 | 216 | Brendon Restall | 
                                         
                                        CAN
                                     | 
                                    47.26 q PB | 0.208 | 
| 5 | 488 | Shotaro Aikyo | 
                                         
                                        JPN
                                     | 
                                    47.42 PB | 0.163 | 
| 6 | 686 | Pieter CONRADIE | 
                                         
                                        RSA
                                     | 
                                    47.58 | 0.182 | 
| 7 | 541 | Ahmed Yahya Al Khayri | 
                                         
                                        KSA
                                     | 
                                    48.57 PB | 0.169 | 
| 651 | Rafal Smolen | 
                                         
                                        POL
                                     | 
                                    DQ | 0.000 |