| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 271 | Kirani JAMES | 
                                         
                                        GRN
                                     | 
                                    47.29 Q PB | 0.152 | 
| 2 | 241 | Jordan McGrath | 
                                         
                                        GBR
                                     | 
                                    47.48 Q PB | 0.165 | 
| 3 | 68 | Jonathan da Silva | 
                                         
                                        BRA
                                     | 
                                    48.67 | 0.156 | 
| 4 | 317 | Sajjad HASHEMI | 
                                         
                                        IRI
                                     | 
                                    48.72 | 0.145 | 
| 5 | 251 | Benjamin Jonas | 
                                         
                                        GER
                                     | 
                                    48.83 | 0.192 | 
| 6 | 45 | Triedecio Davis | 
                                         
                                        BAH
                                     | 
                                    48.86 | 0.206 | 
| 7 | 521 | Arkadiusz Wojno | 
                                         
                                        POL
                                     | 
                                    48.97 | 0.157 | 
| 8 | 108 | Mingyu Chen | 
                                         
                                        CHN
                                     | 
                                    49.07 | 0.177 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 235 | Christopher Clarke | 
                                         
                                        GBR
                                     | 
                                    47.85 Q | 0.173 | 
| 2 | 566 | Hendrik Maartens | 
                                         
                                        RSA
                                     | 
                                    48.01 Q | 0.141 | 
| 3 | 376 | Akihiro Urano | 
                                         
                                        JPN
                                     | 
                                    48.32 | 0.148 | 
| 4 | 662 | Robin Rohlén | 
                                         
                                        SWE
                                     | 
                                    48.94 | 0.184 | 
| 5 | 537 | Juan Carlos Vega | 
                                         
                                        PUR
                                     | 
                                    49.25 | 0.154 | 
| 6 | 359 | Rolando Berch | 
                                         
                                        JAM
                                     | 
                                    49.34 | 0.176 | 
| 7 | 216 | Isoa Me | 
                                         
                                        FIJ
                                     | 
                                    49.44 | 0.159 | 
| 8 | 292 | Zoltán Kovács | 
                                         
                                        HUN
                                     | 
                                    49.84 | 0.173 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 590 | Vladimir Krasnov | 
                                         
                                        RUS
                                     | 
                                    47.22 Q | 0.196 | 
| 2 | 713 | Danzell Fortson | 
                                         
                                        USA
                                     | 
                                    47.70 Q | 0.168 | 
| 3 | 412 | Yonas Al-Hosah | 
                                         
                                        KSA
                                     | 
                                    47.78 q SB | 0.137 | 
| 4 | 263 | Niklas Zender | 
                                         
                                        GER
                                     | 
                                    48.31 q | 0.149 | 
| 5 | 65 | Pako Seribe | 
                                         
                                        BOT
                                     | 
                                    48.31 | 0.137 | 
| 6 | 41 | Jeffery Gibson | 
                                         
                                        BAH
                                     | 
                                    48.86 | 0.175 | 
| 7 | 186 | Cristian González | 
                                         
                                        ESP
                                     | 
                                    49.04 | 0.132 | 
| 8 | 73 | Jonatha LÃdia | 
                                         
                                        BRA
                                     | 
                                    49.14 | 0.146 |