| Final: Start time: 23:50 +1 UTC, Temperature --° C, Humidity -- % _ |   
                                       | Final Ranking | time |   | L | Rk | React. | bib |  | 1. Wayde van Niekerk |  RSA | 43.98s |   |   | 3. | 0.157 | 1282 |  | 2. Steven Gardiner |  BAH | 44.41s |   |   | 1. | 0.188 | 667 |  | 3. Abdalelah Haroun |  QAT | 44.48s | SB |   | 8. | 0.190 | 1266 |  | 4. Baboloki Thebe |  BOT | 44.66s |   |   | 5. | 0.182 | 712 |  | 5. Nathon Allen |  JAM | 44.88s |   |   | 2. | 0.1158 | 1071 |  | 6. Demish Gaye |  JAM | 44.04s |   |   | 7. | 0.179 | 1084 |  | 7. Fred Kerley |  USA | 45.23s |   |   | 6. | 0.142 | 1413 |  | -. Isaac Makwala |  BOT | DNS |   |   |   |   | 708 |   
 Isaac Makwala (BOT) withdrew due to ilness.
 
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|   |  | Qualifiyng standard: 45.50s |  | Athletes Target Number: 48  |   
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 |   |  | First 2 and best 2 advanced to Final. |   
                                    |   |  | Temperature --° C, Humidity --  |   
                                       | Ranking | time |   | L | Rk | React. | bib |  | 1. Steven Gardiner |  BAH | 43.89s | NR | 5 | 1. | 0.186 | 667 |  | 2. Nathon Allen |  JAM | 44.19s | PB | 6 | 2. | 0.161 | 1071 |  | 3. Fred Kerley |  USA | 44.51s |   | 7 | 6. | 0.137 | 1413 |  | 4. Kévin Borlée |  BEL | 45.10s |   | 9 | 11. | 0.146 | 688 |  | 5. Wilbert London III |  USA | 45.12s |   | 4 | 12. | 0.181 | 1422 |  | 6. Óscar Husillos |  ESP | 45.16s | PB | 3 | 14. | 0.163 | 871 |  | 7. Rafal Omelko |  POL | 45.37s |   | 2 | 18. | 0.201 | 1249 |  | 8. Dwayne Cowan |  GBR | 45.96s |   | 8 | 24. | 0.144 | 952 |   
                                    |   |  | Temperature --° C, Humidity --  |   
                                            | Ranking | time |   | L | Rk | React. | bib |  | 1. Wayde van Niekerk |  RSA | 44.22s |   | 6 | 3. | 0.168 | 1282 |  | 2. Baboloki Thebe |  BOT | 44.33s |   | 5 | 5. | 0.178 | 712 |  | 3. Abdalelah Haroun |  QAT | 44.64s | SB | 9 | 8. | 0.179 | 1266 |  | 4. Matthew Hudson-Smith |  GBR | 44.74s | SB | 2 | 9. | 0.142 | 961 |  | 5. Lalonde Gordon |  TTO | 45.20s |   | 4 | 15. | 0.151 | 1325 |  | 6. Brian Gregan |  IRL | 45.42s |   | 8 | 19. | 0.188 | 1055 |  | 7. LaShawn Merritt |  USA | 45.52s |   | 7 | 20. | 0.195 | 1426 |  | 8. Boniface Ontuga Mweresa |  KEN | 45.93s |   | 3 | 22. | 0.234 | 1143 |   
                                    |   |  | Temperature --° C, Humidity --  |   
                                            | Ranking | time |   | L | Rk | React. | bib |  | 1. Isaac Makwala |  BOT | 44.30s |   | 5 | 4. | 0.248 | 708 |  | 2. Demish Gaye |  JAM | 44.55s | PB | 6 | 7. | 0.157 | 1084 |  | 3. Gil Roberts |  USA | 44.84s |   | 7 | 10. | 0.170 | 1431 |  | 4. Jamal Walton |  CAY | 45.16s |   | 9 | 13. | 0.153 | 766 |  | 5. Jonathan Borlée |  BEL | 45.23s |   | 3 | 16. | 0.203 | 689 |  | 6. Pavel Maslák |  CZE | 45.24s |   | 2 | 17. | 0.146 | 833 |  | 7. Machel Cedenio |  TTO | 45.91s |   | 8 | 21. | 0.221 | 1324 |  | 8. Davide Re |  ITA | 45.95s |   | 4 | 23. | 0.186 | 1065 |   
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|   |  | Temperature 17° C, Humidity 68  |   
| Ranking | time |   | L | Rk | React. | bib |  | 1. Fred Kerley |  USA | 44.92s |   | 7 | 5. | 0.151 | 1413 |  | 2. Lalonde Gordon |  TTO | 45.02s | SB | 8 | 9. | 0.187 | 1325 |  | 3. Borlée Kévin |  BEL | 45.09s |   | 6 | 11. | 0.147 | 688 |  | 4. Pavel Maslák |  CZE | 45.10s | SB | 9 | 12. | 0.198 | 833 |  | 5. Matthew Hudson-Smith |  GBR | 45.31s |   | 5 | 17. | 0.152 | 961 |  | 6. Lucas Carvalho |  BRA | 45.86s |   | 4 | 28. | 0.169 | 714 |  | 7. Lucas Búa |  ESP | 46.00s |   | 3 | 34. | 0.153 | 857 |  | 8. Collins Omae Gichana |  KEN | 46.10s |   | 2 | 37. | 0.192 | 1129 |  | 9. Bachir Mahamat |  CHA | 47.50s |   | 1 | 47. | 0.224 | 768 |   
|   |  | Temperature 18° C, Humidity 60  |   
                                       | Ranking | time |   | L | Rk | React. | bib |  | 1. Wayde van Niekerk |  RSA | 45.27s |   | 5 | 16. | 0.185 | 1282 |  | 2. Davide Re |  ITA | 45.71s |   | 2 | 23. | 0.163 | 1065 |  | 3. Machel Cedenio |  TTO | 45.77s |   | 3 | 27. | 0.216 | 1324 |  | 4. Teddy Atine - Venel |  FRA | 45.90s |   | 4 | 30. | 0.153 | 915 |  | 5. Yoandys Lescay |  CUB | 45.93s |   | 6 | 31. | 0.228 | 813 |  | 6. Luka Janežic |  SLO | 46.06s |   | 1 | 36. | 0.244 | 1289 |  | 7. Steven Solomon |  AUS | 46.27s |   | 9 | 38. | 0.220 | 654 |  | 8. Kimorie Shearman |  VIN | 47.05s |   | 7 | 43. | 0.172 | 1456 |  | -. Nery Brenes |  CRC | DQ |   | 8 |   | 0.194 | 802 |   
|   |  | Temperature 19° C, Humidity 56  |   
                                           | Ranking | time |   | L | Rk | React. | bib |  | 1. Baboloki Thebe |  BOT | 44.82s |   | 6 | 3. | 0.184 | 712 |  | 2. Demish Gaye |  JAM | 44.98s |   | 8 | 7. | 0.206 | 1084 |  | 3. Dwayne Cowan |  GBR | 45.39s |   | 3 | 19. | 0.162 | 952 |  | 4. Boniface Ontuga Mweresa |  KEN | 45.58s |   | 7 | 20. | 0.219 | 1143 |  | 5. Rafal Omelko |  POL | 45.69s |   | 9 | 21. | 0.271 | 1249 |  | 6. Samuel García |  ESP | 46.37s |   | 4 | 39. | 0.176 | 868 |  | 7. Pieter Conradie |  RSA | 46.62s |   | 2 | 40. | 0.141 | 1272 |  | 8. Warren Hazel |  SKN | 46.96s |   | 1 | 42. | 0.173 | 1288 |  | 9. Narek Ghukasyan |  ARM | 49.70s | SB | 5 | 49. | 0.198 | 630 |   
|   |  | Temperature 19° C, Humidity 56  |   
                                         | Ranking | time |   | L | Rk | React. | bib |  | 1. Steven Gardiner |  BAH | 44.75s |   | 7 | 2. | 0.230 | 667 |  | 2. Wilbert London III |  USA | 45.10s | .092 | 5 | 13. | 0.221 | 1422 |  | 3. Brian Gregan |  IRL | 45.37s |   | 4 | 18. | 0.186 | 1055 |  | 4. Jonathan Borlée |  BEL | 45.70s |   | 9 | 22. | 0.174 | 689 |  | 5. Luguelín Santos |  DOM | 45.73s |   | 8 | 24. | 0.182 | 843 |  | 6. Mamoudou Eliman Hanne |  FRA | 45.89s |   | 3 | 29. | 0.137 | 929 |  | 7. Yilmar Herrera |  COL | 47.18s |   | 2 | 44. | 0.204 | 794 |  | -. Steven Gayle |  JAM |  DQ R 163.3(a) | 6 |   | 0.198 | 1085 |   
|   |  | Temperature 19° C, Humidity 56  |   
                                     | Ranking | time |   | L | Rk | React. | bib |  | 1. Isaac Makwala |  BOT | 44.55s |   | 6 | 1. | 0.232 | 708 |  | 2. LaShawn Merritt |  USA | 45.00s |   | 9 | 8. | 0.219 | 1426 |  | 3. Jamal Walton |  CAY | 45.05s |   | 2 | 10. | 0.153 | 766 |  | 4. Husillos Óscar |  ESP | 45.22s | PB | 5 | 14. | 0.167 | 871 |  | 5. Raymond Kibet |  KEN | 45.75s | .748 | 3 | 25. | 0.252 | 1132 |  | 6. Martyn Rooney |  GBR | 45.75s | .750 | 8 | 26. | 0.145 | 977 |  | 7. Renny Quow |  TTO | 45.95s |   | 7 | 32. | 0.149 | 1328 |  | 8. Winston George |  GUY | 46.02s |   | 1 | 35. | 0.239 | 1032 |  | 9. Sailosi Tubuilagi |  FIJ | 48.98s |   | 4 | 48. | 0.173 | 909 |   
|   |  | Temperature 19° C, Humidity 56  |   
                                                | Ranking | time |   | L | Rk | React. | bib |  | 1. Nathon Allen |  JAM | 44.91s |   | 6 | 4. | 0.144 | 1071 |  | 2. Gil Roberts |  USA | 44.92s |   | 3 | 6. | 0.226 | 1431 |  | 3. Abdalelah Haroun |  QAT | 45.27s |   | 9 | 15. | 0.204 | 1266 |  | 4. Muhammed Anas Yahiya |  IND | 45.98s |   | 4 | 33. | 0.155 | 1049 |  | 5. Samson Oghenewegba Nathaniel |  NGR | 46.63s |   | 5 | 41. | 0.200 | 1208 |  | 6. Takamasa Kitagawa |  JPN | 47.35s |   | 8 | 45. | 0.158 | 1113 |  | 7. Karabo Sibanda |  BOT | 47.44s |   | 7 | 46. | 0.153 | 711 |  | -. Emmanuel Dasor |  GHA | DNS |   | 2 |   |   | 1016 |   
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| Record | Athlete | mark | venue | date |  | World and Champ. Record | Michael Johnson (USA) | 43.18s | Sevilla, Spain | 26 August 1999 |  | World Leading | Isaac Makwala (BOT) | 43.72s | La Chaux-de-Fonds, Switzerland | 5 July 2015 |  | African Record | Isaac Makwala (BOT) | 43.72s | La Chaux-de-Fonds, Switzerland | 5 July 2015 |  | Asian Record | Abdelalelah Haroun (QAT) | 44.27s | La Chaux-de-Fonds, Switzerland | 5 July 2015 |  | NarCeCa Record | Michael Johnson (USA) | 43.18s | Sevilla, Spain | 26 August 1999 |  | South American Record | Sanderlei Parrela (BRA) | 44.29s | Sevilla, Spain | 26 August 1999 |  | European Record | Thomas Schönlebe (GDR) | 44.33s | Rome, Italy | 3 September 1987 |  | Oceanian Record | Darren Clark (AUS) | 44.38s | Seoul, South Korea | 26 September 1988 |   
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 |   |  | Event Target Number: 56 Athletes. 35 Countries. |   
| Athlete | 2017 | best | birth | start |  | -. Wayde Van Niekerk |  RSA | 43.62s | 43.03s | 15 Jul 92 | Ht - -. |  | -. Fred Kerley |  USA | 43.70s | 43.70s | 7 May 95 | Ht - -. |  | -. Isaac Makwala |  BOT | 43.84s | 43.72s | 29 Sep 86 | Ht - -. |  | -. Baboloki Thebe |  BOT | 44.02s | 44.02s | 18 Mar 97 | Ht - -. |  | -. Gil Roberts |  USA | 44.22s | 44.22s | 15 Mar 89 | Ht - -. |  | -. Steven Gardiner |  BAH | 44.26s | 44.26s | 12 Sep 95 | Ht - -. |  | -. Wilbert London III |  USA | 44.47s | 44.47s | 17 Aug 97 | Ht - -. |  | -. Bryshon Nellum |  USA | 44.50s | 44.50s | 1 May 89 | Ht - -. |  | -. Nathon Allen |  JAM | 44.52s | 44.52s | 28 Oct 95 | Ht - -. |  | -. Demish Gaye |  JAM | 44.64s | 44.64s | 20 Jan 93 | Ht - -. |  | -. LaShawn Merritt |  USA | 44.78s | 43.65s | 27 Jun 86 | Ht - -. |  | -. Kévin BorlÉe |  BEL | 44.79s | 44.56s | 22 Feb 88 | Ht - -. |  | -. Luka JaneŽic |  SLO | 44.84s | 44.84s | 14 Nov 95 | Ht - -. |  | -. Machel Cedenio |  TTO | 44.90s | 44.01s | 6 Sep 95 | Ht - -. |  | -. Matthew Hudson-Smith |  GBR | 44.99s | 44.48s | 26 Oct 94 | Ht - -. |  | -. Jamal Walton |  CAY | 44.99s | 44.99s | 25 Nov 98 | Ht - -. |  | -. Steven Gayle |  JAM | 44.99s | 44.99s | 19 Mar 94 | Ht - -. |  | -. Samuel GarcÍa |  ESP | 45.00s | 45.00s | 4 Dec 91 | Ht - -. |  | -. Karabo Sibanda |  BOT | 45.05s | 44.25s | 2 Jul 98 | Ht - -. |  | -. Bralon Taplin |  GRN | 45.08s | 44.38s | 8 May 92 | Ht - -. |  | -. Jonathan BorlÉe |  BEL | 45.09s | 44.43s | 22 Feb 88 | Ht - -. |  | -. Abdalelah Haroun |  QAT | 45.15s | 44.27s | 1 Jan 97 | Ht - -. |  | -. Pieter Conradie |  RSA | 45.15s | 45.15s | 20 Oct 94 | Ht - -. |  | -. Winston George |  GUY | 45.16s | 45.16s | 19 May 87 | Ht - -. |  | -. Lalonde Gordon |  TTO | 45.18s | 44.52s | 25 Nov 88 | Ht - -. |  | -. Yoandys Lescay |  CUB | 45.18s | 45.00s | 5 Jan 94 | Ht - -. |  | -. Rusheen Mcdonald |  JAM | 45.19s | 43.93s | 17 Aug 92 | Ht - -. |  | -. Steven Solomon |  AUS | 45.19s | 44.97s | 16 May 93 | Ht - -. |  | -. Collins Omae Gichana |  KEN | 45.19s | 45.19s | 9 Apr 89 | Ht - -. |  | -. Raymond Kibet |  KEN | 45.21s | 45.21s | 4 Feb 96 | Ht - -. |  | -. Rafal Omelko |  POL | 45.23s | 45.14s | 16 Jan 89 | Ht - -. |  | -. Samson Oghenewegba Nathaniel |  NGR | 45.23s | 45.23s | 29 Aug 97 | Ht - -. |  | -. Brian Gregan |  IRL | 45.26s | 45.26s | 31 Dec 89 | Ht - -. |  | -. Luguelín Santos |  DOM | 45.32s | 44.11s | 12 Nov 93 | Ht - -. |  | -. Muhammed Anas Yahiya |  IND | 45.32s | 45.32s | 17 Sep 94 | Ht - -. |  | -. Óscar Husillos |  ESP | 45.33s | 45.33s | 18 Jul 93 | Ht - -. |  | -. Onkabetse Nkobolo |  BOT | 45.34s | 45.10s | 23 Jul 93 | Ht - -. |  | -. Dwayne Cowan |  GBR | 45.36s | 45.36s | 1 Jan 85 | Ht - -. |  | -. Lucas Carvalho |  BRA | 45.37s | 45.37s | 16 Jul 93 | Ht - -. |  | -. Teddy Atine-Venel |  FRA | 45.39s | 45.39s | 16 Mar 85 | Ht - -. |  | -. Davide Re |  ITA | 45.40s | 45.40s | 16 Mar 93 | Ht - -. |  | -. Renny Quow |  TTO | 45.41s | 44.53s | 25 Aug 87 | Ht - -. |  | -. Pavel MaslÁk |  CZE | 45.42s | 44.79s | 21 Feb 91 | Ht - -. |  | -. Boniface Ontuga Mweresa |  KEN | 45.42s | 45.01s | 13 Nov 93 | Ht - -. |  | -. Emmanuel Dasor |  GHA | 45.43s | 45.43s | 14 Sep 95 | Ht - -. |  | -. Mamoudou Eliman Hanne |  FRA | 45.44s | 45.44s | 6 Mar 88 | Ht - -. |  | -. Yilmar Herrera |  COL | 45.48s | 45.48s | 29 Apr 96 | Ht - -. |  | -. Takamasa Kitagawa |  JPN | 45.48s | 45.48s | 5 Sep 96 | Ht - -. |  | -. Lucas BÚa |  ESP | 45.50s | 45.50s | 12 Jan 94 | Ht - -. |  | -. Martyn Rooney |  GBR | 45.65s | 44.45s | 3 Apr 87 | Ht - -. |  | -. Warren Hazel |  SKN | 45.68s | 45.68s | 11 Feb 96 | Ht - -. |  | -. Nery Brenes |  CRC | 45.71s | 44.60s | 25 Sep 85 | Ht - -. |  | -. Kimorie Shearman |  VIN | 45.92s | 45.92s | 23 Aug 92 | Ht - -. |  | -. Bachir Mahamat |  CHA | 48.23s | 47.13s | 1 Dec 96 | Ht - -. |  | -. Sailosi Tubuilagi |  FIJ | 48.33s | 48.33s | 2 Feb 97 | Ht - -. |  | -. Narek Ghukasyan |  ARM | 51.83s | 49.16s | 18 Oct 92 | Ht - -. |   
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 Prepared and maintained by Todor Krastev 
todor1966@yahoo.com 
Last updated: 16 Aug 2017 
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