| Final 22:15 | time |   | L | React. | SF | bib |  | 1. Karsten Warholm |  NOR | 47.42s |   | 4 | 0.164 | 1. | 1491 |  | 2. Rai Benjamin |  USA | 47.66s |   | 7 | 0.205 | 6. | 1867 |  | 3. Abderrahman Samba |  QAT | 48.03s |   | 9 | 0.198 | 8. | 1603 |  | 4. Kyron McMaster |  IVB | 48.10s | SB | 2 | 0.171 | q5. | 1149 |  | 5. TJ Holmes |  USA | 48.20s | PB | 3 | 0.193 | q7. | 1895 |  | 6. Yasmani Copello |  TUR | 48.25s | SB | 6 | 0.177 | 3. | 1772 |  | 7. Alison dos Santos |  BRA | 48.28s | PB | 5 | 0.208 | 2. | 328 |  | 8. Abdelmalik Lahoulou |  ALG | 49.46s |   | 8 | 0.187 | 4. | 105 |   
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| World Record: Kevin Young, United States 46.78s 26 years, Barcelona (ESP) 6 Aug 1992 |  | Championship Record: Kevin Young, United States 47.18s 27 years, Stuttgart (GER) 19 Aug 1993 |  | World Leading: Karsten Warholm, Norway 46.92s 23 years, Zurich (SUI) 29 Aug 2019 |   
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 Semi-Finals - Saturday 28.09 18:05 |  | Best 4 from each of 5 heats and Best 4 times advanced to Semi-Final. Temperature 25° C, Humidity 67 % |   
| Semi 1 18:05 | time |   | L | React | Rk. | Bib |  | 1. Alison dos Santos |  BRA | 48.35s | Q PB | 6 | 0.211 | 2. | 328 |  | 2. Yasmani Copello |  TUR | 48.386s | Q SB | 3 | 0.232 | 3. | 1772 |  | 3. Kyron McMaster |  IVB | 48.40s | q | 5 | 0.229 | 5. | 1149 |  | 4. Rasmus Mägi |  EST | 48.93s | SB | 7 | 0.140 | 9. | 691 |  | 5. Mohamed Touati |  TUN | 49.14s | PB | 4 | 0.179 | 13. | 1767 |  | 6. Amere Lattin |  USA | 49.20s |   | 2 | 0.152 | 15. | 1910 |  | 7. Kemar Mowatt |  JAM | 49.32s |   | 8 | 0.163 | 16. | 1170 |  | 8. Chieh Chen |  TPE | 49.991s |   | 9 | 0.181 | 20. | 1744 |   
                                 | Semi 2 18:15 | time |   | L | React | Rk. | Bib |  | 1. Karsten Warholm |  NOR | 48.28s | Q | 4 | 0.154 | 1. | 1491 |  | 2. Abdelmalik Lahoulou |  ALG | 48.388s | Q NR | 6 | 0.159 | 4. | 105 |  | 3. TJ Holmes |  USA | 48.67s | q | 7 | 0.258 | 7. | 1895 |  | 4. Ludvy Vaillant |  FRA | 49.10s |   | 5 | 0.209 | 12. | 770 |  | 5. Chris McAlister |  GBR | 49.18s | PB | 9 | 0.165 | 14. | 846 |  | 6. Luke Campbell |  GER | 49.995s |   | 3 | 0.146 | 21. | 904 |  | 7. Patryk Dobek |  POL | 50.18s |   | 8 | 0.174 | 22. | 1527 |  | 8. Masaki Toyoda |  JPN | 50.30s |   | 2 | 0.207 | 23. | 1240 |   
                                 | Semi 3 18:15 | time |   | L | React | Rk. | Bib |  | 1. Rai Benjamin |  USA | 48.52s | Q | 6 | 0.215 | 6. | 1867 |  | 2. Abderrahman Samba |  QAT | 48.72s | Q | 5 | 0.220 | 8. | 1603 |  | 3. Takatoshi Abe |  JPN | 48.97s |   | 4 | 0.161 | 10. | 1208 |  | 4. Thomas Barr |  IRL | 49.02s | SB | 7 | 0.131 | 11. | 1066 |  | 5. Jabir Madari Pillyalil |  IND | 49.71s |   | 9 | 0.199 | 17. | 1045 |  | 6. Fernando Vega |  MEX | 49.96s |   | 2 | 0.220 | 18. | 1400 |  | 7. Vít Müller |  CZE | 49.97s |   | 3 | 0.178 | 19. | 585 |  | 8. Rilwan Alowonle |  NGR | 52.01s |   | 8 | 0.192 | 24. | 1452 |   
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  Heats - Friday 27.09 20:40 |  | Best 4 from each of 5 heats and Best 4 times advanced to Semi-Finals. |   
| Heat 1 20:35 | time |   | L | React | Rk. | Bib |  | 1. Karsten Warholm |  NOR | 49.27s | Q | 4 | 0.161 | 3. | 1491 |  | 12. Thomas Barr |  IRL | 49.41s | Q | 7 | 0.184 | 5. | 1066 |  | 3. Jabir Madari Pillyalil |  IND | 49.619s | Q | 3 | 0.186 | 11. | 1045 |  | 4. Kemar Mowatt |  JAM | 49.63s | Q | 9 | 0.182 | 12. | 1170 |  | 5. Amere Lattin |  USA | 49.72s | q | 5 | 0.223 | 14. | 1910 |  | 6. Fernando Vega |  MEX | 49.949s | q | 2 | 0.209 | 19. | 1400 |  | 7. Mahdi Pirjahan |  IRI | 50.46s |   | 8 | 0.184 | 25. | 1064 |  | 8. Artur Terezan |  BRA | 51.52s |   | 6 | SB | 34. | 337 |   
                               | Heat 2 20:42 | time |   | L | React | Rk. | Bib |  | 1. Kyron McMaster |  IVB | 49.60s | Q | 4 | 0.212 | 9. | 1149 |  | 2. Alison dos Santos |  BRA | 49.66s | Q | 8 | 0.181 | 13. | 328 |  | 3. Chieh Chen |  TPE | 49.949s | Q | 9 | 0.173 | 19. | 1744 |  | 4. Luke Campbell |  GER | 50.20s | Q | 2 | 0.142 | 23. | 904 |  | 5. Creve Armando Machava |  MOZ | 50.76s |   | 5 | 0.174 | 30. | 1415 |  | 6. Lindsay Hanekom |  RSA | 51.71s |   | 3 | 0.169 | 35. | 1625 |  | 7. Ned Justeen Azemia |  SEY | 52.58s |   | 6 | 0.198 | 36. | 1656 |  | -. Bienvenu Sawadogo |  BUR | DQ |   | 7 | 0.146 |   | 389 |   
                               | Heat 3 20:49 | time |   | L | React | Rk. | Bib |  | 1. Abderrahman Samba |  QAT | 49.08s | Q | 8 | 0.183 | 1. | 1603 |  | 2. Takatoshi Abe |  JPN | 49.25s | Q | 2 | 0.160 | 2. | 1208 |  | 3. TJ Holmes |  USA | 49.50s | Q | 9 | 0.274 | 7. | 1895 |  | 4. Rilwan Alowonle |  NGR | 50.04s | Q | 4 | 0.197 | 21. | 1452 |  | 5. Nick Smidt |  NED | 50.54s |   | 7 | 0.171 | 26. | 1431 |  | 6. Kariem Hussein |  SUI | 50.62s |   | 3 | 0.171 | 28. | 1678 |  | 7. Wilfried Happio |  FRA | 51.25s |   | 6 | 0.163 | 33. | 780 |  | 8. Andrea Ercolani Volta |  SMR | 52.60s |   | 5 | NR | 37. | 1667 |   
                          | Heat 4 20:56 | time |   | L | React | Rk. | Bib |  | 1. Rai Benjamin |  USA | 49.611s | Q | 4 | 0.217 | 10. | 1867 |  | 2. Mohamed Touati |  TUN | 49.76s | Q | 8 | 0.178 | 17. | 1767 |  | 3. Patryk Dobek |  POL | 49.89s | Q | 6 | 0.147 | 18. | 1527 |  | 4. Vít Müller |  CZE | 50.15s | Q | 5 | 0.196 | 22. | 585 |  | 5. Masaki Toyoda |  JPN | 50.34s | q | 2 | 0.187 | 24. | 1240 |  | 6. Sergio Fernández |  ESP | 50.71s |   | 3 | 0.142 | 29. | 654 |  | 7. Marcio Teles |  BRA | 51.02s |   | 7 | 0.141 | 32. | 336 |   
                              | Heat 5 21:03 | time |   | L | React | Rk. | Bib |  | 1. Rasmus Mägi |  EST | 49.34s | Q SB | 6 | 0.153 | 4. | 691 |  | 2. Ludvy Vaillant |  FRA | 49.49s | Q | 7 | 0.204 | 6. | 770 |  | 3. Abdelmalik Lahoulou |  ALG | 49.54s | Q | 8 | 0.190 | 8. | 105 |  | 4. Chris McAlister |  GBR | 49.73s | Q | 3 | 0.168 | 15. | 846 |  | 5. Yasmani Copello |  TUR | 49.75s | q | 9 | 0.207 | 16. | 1772 |  | 6. Dharun Ayyasamy |  IND | 50.55s |   | 2 | 0.170 | 27. | 1035 |  | 7. Constantin Preis |  GER | 50.93s |   | 5 | 0.198 | 31. | 925 |  | 8. Malique Smith |  ISV | 59.45s |   | 4 | 0.167 | 38. | 1081 |   
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 |   |  | Quota 48 athletes. Qualifiying Standard 49.30s - 48 athletes. Qualification Period 07.09.2018 - 06.09.2019. |   
| Athlete | time | Venue | date |   |  | 1. Karsten Warholm |  NOR | 46.92s | Zürich (SUI) | 29.08.2019 | S,DL,AC,Q |  | 2. Rai Benjamin |  USA | 46.98s | Zürich (SUI) | 29.08.2019 | S,Q |  | 3. Abderrahmane Samba |  QAT | 47.27s | Shanghai (CHN) | 18.05.2019 | S,AC,Q |  | 4. Ludvy Vaillant |  FRA | 48.30s | Paris (FRA) | 24.08.2019 | S,Q |  | 5. Kyron McMaster |  IVB | 48.33s | Paris (FRA) | 24.08.2019 | S,AC,Q |  | 6. Alison Brendom Alves Dos Santos |  BRA | 48.45s | Lima (PER) | 08.08.2019 | S,AC,Q |  | 7. Yasmani Copello |  TUR | 48.47s | Paris (FRA) | 24.08.2019 | S,Q |  | 8. TJ Holmes |  USA | 48.58s | Des Moines IA (USA) | 27.07.2019 | S,Q |  | 9. Marcio Teles |  BRA | 48.60s | National Training Centre, Bragança Pauli | 01.09.2019 | S,Q |  | 9. Rasmus Mägi |  EST | 48.60s | Antalya (TUR) | 11.09.2018 | S,Q |  | 11.Amere Lattin |  USA | 48.66s | Des Moines IA (USA) | 27.07.2019 | S,Q |  | 12.Kemar Mowatt |  JAM | 48.70s | Kingston (JAM) | 21.06.2019 | S,Q |  | 13.Patryk Dobek |  POL | 48.80s | Bydgoszcz (POL) | 09.08.2019 | S,Q |  | 13.Takatoshi Abe |  JPN | 48.80s | Fukuoka (JPN) | 29.06.2019 | S,Q |  | 13.Ayyasamy Dharun |  IND | 48.80s | Patiala (IND) | 16.03.2019 | S,Q |  | 16.Lindsay Hanekom |  RSA | 48.81s | Germiston (RSA) | 27.04.2019 | S,Q |  | 17.Chen Chieh |  TPE | 48.92s | Doha (QAT) | 22.04.2019 | S,Q |  | 18.Abdelmalik Lahoulou |  ALG | 48.95s | Cairo (EGY) | 08.04.2019 | S,AC,Q |  | 19.Wilfried Happio |  FRA | 49.03s | Gävle (SWE) | 14.07.2019 | S,Q |  | 20.Masaki Toyoda |  JPN | 49.05s | Fukuoka (JPN) | 29.06.2019 | S,Q |  | 21.Thomas Barr |  IRL | 49.11s | Oslo (NOR) | 13.06.2019 | S,Q |  | 22.M.P. Jabir |  IND | 49.13s | Doha (QAT) | 22.04.2019 | S,Q |  | 23.Sérgio Fernández |  ESP | 49.14s | Madrid (ESP) | 25.08.2019 | S,Q |  | 24.Artur Langowski |  BRA | 49.18s | Bragança Paulista (BRA) | 16.09.2018 | S,Q |  | 25.Kariem Hussein |  SUI | 49.21s | Basel (SUI) | 24.08.2019 | S,Q |  | 26.Constantin Preis |  GER | 49.23s | Zürich (SUI) | 29.08.2019 | S,Q |  | 27.Luke Campbell |  GER | 49.24s | Bydgoszcz (POL) | 10.08.2019 | S,Q |  | 28.Bienvenu Sawadogo |  BUR | 49.25s | Rabat (MAR) | 29.08.2019 | S,Q |  | 29.Nick Smidt |  NED | 49.28s | Zürich (SUI) | 29.08.2019 | S,Q |  | 29.Chris McAlister |  GBR | 49.28s | Bydgoszcz (POL) | 10.08.2019 | S,Q |  | 31.Mohamed Amin Touati |  TUN | 49.29s | Rabat (MAR) | 29.08.2019 | S,Q |  | 32.Nicholas Chirchir |  KEN | 49.30s | Nairobi (KEN) | 20.08.2019 | S,Q |  |  Outside of Qualifiying Standard 49.30s - 5 athletes. |  | 33.Fernando Vega |  MEX | 49.32s | Napoli (ITA) | 11.07.2019 | S,q |  | 34.Bassem Hemeida |  QAT | 49.33s | Madrid (ESP) | 25.08.2019 | q |  | 34.Mehdi Pirjahan |  IRI | 49.33s | Lucknow (IND) | 28.08.2019 | S,q |  | 36.Vít Müller |  CZE | 49.36s | Bydgoszcz (POL) | 10.08.2019 | q |  | 37.Rilwan Alowonle |  NGR | 49.42s | Rabat (MAR) | 29.08.2019 | S,q |  | 38.Juander Santos |  DOM | 49.44s | Lima (PER) | 06.08.2019 | q |  | 39.Romel Lewis |  JAM | 49.46s | Kingston (JAM) | 21.06.2019 | q |  | 40.Yuki Matsushita |  JPN | 49.47s | Fukuoka (JPN) | 29.06.2019 | q |  | 40.Oskari Mörö |  FIN | 49.47s | Berlin (GER) | 01.09.2019 | q |  | 42.Armando Machava Creve |  MOZ | 49.54s | Rabat (MAR) | 28.08.2019 | S,q |  | 43.Ned Azemia |  SEY | 50.18s | Hobbs NM (USA) | 18.05.2019 | S,q |  |  Top 8 not qualified athletes |  | -. Javan Gallimore |  JAM | 49.48s | Kingston (JAM) | 20.06.2019 |   |  | -. Dai Greene |  GBR | 49.49s | Bruxelles (BEL) | 01.09.2019 |   |  | -. Joshua Abuaku |  GER | 49.49s | La Chaux-de-Fonds (SUI) | 30.06.2019 |   |  | -. Zied Azizi |  TUN | 49.50s | Nivelles (BEL) | 22.06.2019 |   |  | -. José Reynaldo Bencosme |  ITA | 49.52s | Pescara (ITA) | 09.09.2018 |   |  | -. Jeffery Gibson |  BAH | 49.53s | Lima (PER) | 08.08.2019 |   |  | -. Guillermo Ruggeri |  ARG | 49.55s | Lima (PER) | 08.08.2019 |   |  | -. Jacob Paul |  GBR | 49.57s | Birmingham (GBR) | 25.08.2019 |   |  |  Athletes who achieved the entry standard but were not selected |  | -. Annsert Whyte |  JAM | 48.46s | Ostrava (CZE) | 08.09.2018 | nS |  | -. Quincy Hall |  USA | 48.48s | Austin TX (USA) | 07.06.2019 | nS |  | -. Norman Grimes |  USA | 48.68s | Des Moines IA (USA) | 27.07.2019 | nS |  | -. Dave Kendziera |  USA | 48.69s | Des Moines IA (USA) | 27.07.2019 | nS |  | -. Sokwakhana Zazini |  RSA | 48.73s | Napoli (ITA) | 11.07.2019 | nS |  | -. Taylor McLaughlin |  USA | 48.85s | Austin TX (USA) | 07.06.2019 | nS |  | -. Khallifah Rosser |  USA | 49.05s | Des Moines IA (USA) | 26.07.2019 | nS |  | -. Byron Robinson |  USA | 49.09s | Des Moines IA (USA) | 27.07.2019 | nS |  | -. Cameron Samuel |  USA | 49.09s | Tucson AZ (USA) | 12.05.2019 | nS |  | -. Johnny Dutch |  USA | 49.26s | Šamorín (SVK) | 15.06.2019 | nS |  | -. Ian Dewhurst |  AUS | 50.29s | Sydney (AUS) | 07.04.2019 | nS,AC |   
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 Prepared and maintained by Todor Krastev 
todor1966@yahoo.com 
Last updated: 14 Sep 2025 Facebook Todor Krastev 
 
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