| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 651 | Khance Meyers |  USA | 20.70 Q | 0.159 | 
| 2 | 444 | Koki UEYAMA |  JPN | 21.04 Q | 0.155 | 
| 3 | 290 | Paul Tritenne |  FRA | 21.23 Q | 0.178 | 
| 4 | 541 | Abdelaziz MOHAMED |  QAT | 21.25 Q | 0.179 | 
| 5 | 595 | Timothy FREDERICK |  TTO | 21.30 q | 0.130 | 
| 6 | 231 | Juan González |  ESP | 21.34 q | 0.161 | 
| 7 | 111 | Ramadin Pataudi Alexander Jr. |  ANT | 21.61 | 0.145 | 
| 8 | 114 | Tariq Polonius |  ARU | 22.96 | 0.194 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 645 | Eric HARRISON JR. |  USA | 20.73 Q | 0.140 | 
| 2 | 406 | Lorenzo PATTA |  ITA | 21.09 Q PB | 0.171 | 
| 3 | 443 | Keigo YASUDA |  JPN | 21.20 Q | 0.139 | 
| 4 | 672 | Dickson Clever Kapandura |  ZIM | 21.28 Q | 0.142 | 
| 5 | 212 | Štěpán HAMPL |  CZE | 21.53 | 0.173 | 
| 6 | 572 | Esmael DOS RAMOS DE O. FREITAS |  STP | 23.12 PB | 0.195 | 
| 412 | Rikkoi BRATHWAITE |  IVB | DQ | 0.152 | |
| 139 | Joel Johnson |  BAH | DNS | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 297 | Jona EFOLOKO |  GBR | 20.65 Q PB | 0.165 | 
| 2 | 321 | Milo SKUPIN-ALFA |  GER | 20.80 Q PB | 0.152 | 
| 3 | 121 | Zane BRANCO |  AUS | 21.04 Q | 0.145 | 
| 4 | 208 | Daniel Vejražka |  CZE | 21.22 Q | 0.168 | 
| 5 | 426 | Xavier Nairne |  JAM | 21.32 q | 0.142 | 
| 6 | 142 | Matthew Clarke |  BAR | 21.35 | 0.141 | 
| 7 | 596 | Ako Hislop |  TTO | 21.91 | 0.204 | 
| 8 | 493 | Kristian Subotić |  MNE | 22.08 NU20R | 0.138 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 296 | Charles DOBSON |  GBR | 20.65 Q PB | 0.172 | 
| 2 | 585 | Kasper KADESTÃ…L |  SWE | 21.25 Q | 0.164 | 
| 3 | 529 | Bartosz Zieliński |  POL | 21.39 Q | 0.204 | 
| 4 | 579 | William REAIS |  SUI | 21.41 Q | 0.161 | 
| 5 | 268 | Riku ILLUKKA |  FIN | 21.57 | 0.176 | 
| 6 | 550 | Ruben Els |  RSA | 21.59 | 0.165 | 
| 7 | 398 | Lorenzo Ianes |  ITA | 21.88 | 0.141 | 
| 471 | Minkyu Shin |  KOR | DNS | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 245 | Pol RETAMAL |  ESP | 20.81 Q NU20R | 0.170 | 
| 2 | 586 | Henrik LARSSON |  SWE | 20.88 Q | 0.134 | 
| 3 | 494 | Onyema ADIGIDA |  NED | 21.04 Q NU20R | 0.190 | 
| 4 | 381 | Aaron Sexton |  IRL | 21.06 Q PB | 0.146 | 
| 5 | 472 | Ahmed Omar Jumah |  KSA | 21.33 q | 0.197 | 
| 6 | 178 | Antonio Ivanov |  BUL | 21.43 | 0.153 | 
| 7 | 492 | Jacob El Aida Chaffey |  MLT | 22.17 PB | 0.170 | 
| 549 | Thando DLODLO |  RSA | DNS |