| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 753 | Keenan Brock |  USA | 21.36 Q PB | 0.224 | 
| 2 | 563 | Tomasz Kluczynski |  POL | 21.43 Q PB | 0.168 | 
| 3 | 273 | Sam Watts |  GBR | 21.50 q PB | 0.149 | 
| 4 | 610 | Johannes de Klerk |  RSA | 21.52 q | 0.190 | 
| 5 | 412 | Kazunori Katsuyama |  JPN | 21.69 | 0.241 | 
| 6 | 100 | Marlon Laidlaw-Allen |  CAN | 21.93 | 0.279 | 
| 7 | 579 | Carlos RodrÃguez |  PUR | 22.01 | 0.279 | 
| 8 | 530 | Comfort Oluwayomi Olugbemi |  NGR | 22.13 | 0.280 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 756 | Dedric Dukes |  USA | 21.22 Q | 0.187 | 
| 2 | 80 | Leandro de Araújo |  BRA | 21.76 Q | 0.149 | 
| 3 | 56 | Demitri Knowles |  BAH | 21.76 | 0.184 | 
| 4 | 134 | Juquan Tan |  CHN | 21.78 | 0.192 | 
| 5 | 408 | Masato Hayashi |  JPN | 21.79 | 0.175 | 
| 6 | 228 | José Antonio Vizuete |  ESP | 22.08 | 0.158 | 
| 7 | 566 | Adam Pawlowski |  POL | 22.41 | 0.164 | 
| 8 | 77 | Yateya Kambepera |  BOT | 22.45 | 0.189 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 307 | Kirani JAMES |  GRN | 21.23 Q | 0.182 | 
| 2 | 213 | Alberto Gavaldá |  ESP | 21.43 Q SB | 0.207 | 
| 3 | 717 | Moriba Morain |  TTO | 21.56 | 0.163 | 
| 4 | 59 | Nicholas Deshong |  BAR | 21.57 | 0.163 | 
| 5 | 547 | Alex Jordan |  NZL | 21.91 PB | 0.218 | 
| 6 | 131 | Xiang Huang |  CHN | 21.99 | 0.209 | 
| 7 | 525 | Lester Ryan |  MNT | 22.01 PB | 0.141 | 
| 8 | 398 | Kemar BAILEY-COLE |  JAM | 22.11 | 0.260 |