| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 769 | Clarence MUNYAI |  RSA | 20.54 Q | 0.132 | 
| 2 | 412 | Roger Gurski |  GER | 20.64 Q PB | 0.144 | 
| 3 | 573 | Jun YAMASHITA |  JPN | 20.67 q PB | 0.130 | 
| 4 | 383 | Cameron Tindle |  GBR | 20.71 q PB | 0.145 | 
| 5 | 891 | Micaiah HARRIS |  USA | 20.97 | 0.159 | 
| 6 | 184 | Vinicius Moraes |  BRA | 21.25 | 0.161 | 
| 7 | 177 | Xholani Talane |  BOT | 21.40 | 0.187 | 
| 8 | 599 | Moffat Ngari Wanjiru |  KEN | 21.48 | 0.250 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 907 | Michael NORMAN |  USA | 20.71 Q | 0.169 | 
| 2 | 819 | Chun-Han YANG |  TPE | 20.90 Q | 0.140 | 
| 3 | 372 | Ryan Gorman |  GBR | 20.91 | 0.136 | 
| 4 | 681 | Mathias Hove JOHANSEN |  NOR | 21.19 | 0.163 | 
| 5 | 108 | Coull Graham |  ANT | 21.24 PB | 0.139 | 
| 6 | 686 | Hamish Gill |  NZL | 21.49 | 0.227 | 
| 7 | 603 | Seunghwan KO |  KOR | 21.50 | 0.191 | 
| 8 | 806 | Marcus Tornée |  SWE | 21.70 | 0.184 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 762 | Gift LEOTLELA |  RSA | 20.58 Q | 0.170 | 
| 2 | 537 | Nigel ELLIS |  JAM | 20.78 Q | 0.160 | 
| 3 | 584 | Vladislav Grigoryev |  KAZ | 21.08 | 0.161 | 
| 4 | 666 | Emmanuel Arowolo |  NGR | 21.16 | 0.154 | 
| 5 | 140 | Samson COLEBROOKE |  BAH | 21.30 PB | 0.133 | 
| 6 | 566 | Wataru Inuzuka |  JPN | 21.40 | 0.138 | 
| 7 | 113 | Trae Williams |  AUS | 21.49 | 0.131 | 
| 825 | Akanni HISLOP |  TTO | DNF | 0.172 |