| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2268 | Wayde VAN NIEKERK |  RSA | 45.18 Q | 0.200 | 
| 2 | 1566 | Jonathan JONES |  BAR | 45.46 Q | 0.169 | 
| 3 | 1872 | Alex HAYDOCK-WILSON |  GBR | 45.62 Q SB | 0.156 | 
| 4 | 2075 | Julian Jrummi WALSH |  JPN | 45.90 q | 0.126 | 
| 5 | 1719 | Patrik Å ORM |  CZE | 46.07 | 0.174 | 
| 6 | 1551 | Steven SOLOMON |  AUS | 46.87 | 0.152 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 10.96 |  Wayde VAN NIEKERK |  RSA | 
| 200 m | 21.39 |  Wayde VAN NIEKERK |  RSA | 
| 300 m | 32.73 |  Wayde VAN NIEKERK |  RSA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2410 | Michael NORMAN |  USA | 45.37 Q | 0.140 | 
| 2 | 2041 | Christopher TAYLOR |  JAM | 45.68 Q | 0.167 | 
| 3 | 2264 | Zakithi NENE |  RSA | 45.69 Q | 0.123 | 
| 4 | 1572 | Kévin BORLÉE |  BEL | 45.72 q | 0.132 | 
| 5 | 1731 | Benjamin Lobo VEDEL |  DEN | 46.27 | 0.134 | 
| 6 | 2141 | Luis AVILÉS FERREIRO |  MEX | 46.47 | 0.140 | 
| 7 | 2220 | Kajetan DUSZYŃSKI |  POL | 46.57 | 0.132 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.25 |  Michael NORMAN |  USA | 
| 200 m | 22.05 |  Michael NORMAN |  USA | 
| 300 m | 33.23 |  Michael NORMAN |  USA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2366 | Michael CHERRY |  USA | 45.81 Q | 0.137 | 
| 2 | 2437 | Muzala SAMUKONGA |  ZAM | 45.82 Q | 0.180 | 
| 3 | 1579 | Alexander DOOM |  BEL | 46.18 Q | 0.153 | 
| 4 | 2035 | Jevaughn POWELL |  JAM | 46.42 | 0.142 | 
| 5 | 2293 | Ricky PETRUCCIANI |  SUI | 46.60 | 0.165 | 
| 6 | 1597 | Anthony PESELA |  BOT | 47.36 | 0.135 | 
| 7 | 2436 | Obediah TIMBACI |  VAN | 53.32 | 0.209 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.16 |  Michael CHERRY |  USA | 
| 200 m | 21.83 |  Muzala SAMUKONGA |  ZAM | 
| 300 m | 33.16 |  Michael CHERRY |  USA | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2351 | Champion ALLISON |  USA | 45.56 Q | 0.146 | 
| 2 | 1571 | Dylan BORLÉE |  BEL | 45.70 Q | 0.148 | 
| 3 | 1594 | Isaac MAKWALA |  BOT | 45.93 Q | 0.193 | 
| 4 | 2080 | Mikhail LITVIN |  KAZ | 46.00 q SB | 0.206 | 
| 5 | 2008 | Davide RE |  ITA | 46.49 | 0.148 | 
| 6 | 2321 | Dwight ST. HILLAIRE |  TTO | 46.60 | 0.166 | 
| 7 | 2282 | Boško KIJANOVIĆ |  SRB | 46.85 | 0.131 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.24 |  Isaac MAKWALA |  BOT | 
| 200 m | 21.49 |  Mikhail LITVIN |  KAZ | 
| 300 m | 33.00 |  Isaac MAKWALA |  BOT | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 1595 | Bayapo NDORI |  BOT | 44.87 Q PB | 0.140 | 
| 2 | 1945 | Kirani JAMES |  GRN | 45.29 Q | 0.152 | 
| 3 | 2014 | Nathon ALLEN |  JAM | 45.61 Q | 0.142 | 
| 4 | 2069 | Fuga SATO |  JPN | 45.88 q | 0.178 | 
| 5 | 1526 | Alex BECK |  AUS | 45.99 q | 0.170 | 
| 6 | 2009 | Edoardo SCOTTI |  ITA | 46.46 | 0.170 | 
| 7 | 2154 | Dexter MAYORGA |  NCA | 48.40 | 0.232 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.17 |  Bayapo NDORI |  BOT | 
| 200 m | 21.46 |  Bayapo NDORI |  BOT | 
| 300 m | 32.55 |  Bayapo NDORI |  BOT | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 1874 | Matthew HUDSON-SMITH |  GBR | 45.49 Q | 0.160 | 
| 2 | 2159 | Liemarvin BONEVACIA |  NED | 45.82 Q | 0.158 | 
| 3 | 1736 | Lidio Andres FELIZ |  DOM | 45.87 Q | 0.257 | 
| 4 | 1979 | Christopher O'DONNELL |  IRL | 46.01 q | 0.133 | 
| 5 | 2057 | Kaito KAWABATA |  JPN | 46.34 | 0.128 | 
| 6 | 1605 | Lucas CARVALHO |  BRA | 47.53 | 0.162 | 
| 7 | 1502 | Aiden HAZZARD |  AIA | 51.44 SB | 0.128 | 
| Split | Mark | Athlete | COUNTRY | 
|---|---|---|---|
| 100 m | 11.13 |  Matthew HUDSON-SMITH |  GBR | 
| 200 m | 21.47 |  Matthew HUDSON-SMITH |  GBR | 
| 300 m | 32.74 |  Matthew HUDSON-SMITH |  GBR |