The men's 400 metres at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 5, 6, and 8 August.Start list The winning margin was 0.43 seconds.

Summary Isaac Makwala (Botswana) had qualified for the final, but was barred from competing as he was under quarantine due to the norovirus outbreak in one of the athletes' hotels. Steven Gardiner (Bahamas) started fastest, with Wayde van Niekerk (South Africa) equal to him by about 200 metres, and going on to build a lead through the final turn. Van Niekerk had time to slow down, winning comfortably ahead of Gardiner, with Abdalelah Haroun (Qatar) finishing quickly from dead last off the turn to claim bronze.

Records Before the competition records were as follows:

Record Athlete Date LocationWorld43.03Wayde van NiekerkRio de Janeiro, BrazilChampionship43.18Michael Johnson26 Aug 1999Sevilla, SpainWorld leading43.62Wayde van Niekerk6 Jul 2017Lausanne, SwitzerlandAfrican43.03Wayde van Niekerk14 Aug 2016Rio de Janeiro, BrazilAsian43.93Yousef Masrahi23 Aug 2015Beijing, ChinaNACAC43.18Michael Johnson26 Aug 1999Seville, SpainSouth American44.29Sanderlei Parrela26 Aug 1999Seville, SpainEuropean44.33Thomas Schönlebe3 Sep 1987Rome, ItalyOceanian44.38Darren Clark26 Sep 1988Seoul, South Korea

The following records were set at the competition:

Record Athlete Date Bahamian43.89Steven Gardiner6 Aug 2017

Qualification standard The standard to qualify automatically for entry was 45.50.

Schedule The event schedule, in local time (UTC+1), was as follows: Date Time Round5 August 10:45 Heats6 August 19:40 Semifinals8 August 21:50 Final

Results Heats The first round took place on 5 August in six heats as follows:

Heat 1 2 3 4 5 6 Start time 10:45 10:53 11:02 11:11 11:21 11:29 Photo finishlinklinklinklinklinklink

The first three in each heat ( Q ) and the next six fastest ( q ) qualified for the semifinals. The overall results were as follows:

Rank Heat Lane Name Nationality Time Notes 1 5 6 Isaac Makwala 44.55 2 4 7 Steven Gardiner 44.75 3 3 6 Baboloki Thebe 44.82 4 6 6 Nathon Allen 44.91 5 1 7 Fred Kerley 44.92 6 6 3 Gil Roberts 44.92 7 3 8 Demish Gaye 44.92 8 5 9 LaShawn Merritt 45.00 9 1 8 Lalonde Gordon 45.02 , 10 5 2 Jamal Walton 45.05 11 1 6 Kevin Borlée 45.09 12 1 9 Pavel Maslák 45.10 , 13 4 5 Wilbert London 45.10 14 5 5 Óscar Husillos 45.22 , 15 6 9 Abdalelah Haroun 45.27 16 2 5 Wayde van Niekerk 45.27 17 1 5 Matthew Hudson-Smith 45.31 18 4 4 Brian Gregan 45.37 19 3 3 Dwayne Cowan 45.39 20 3 7 Boniface Ontuga Mweresa 45.58 21 3 9 Rafał Omelko 45.69 22 4 9 Jonathan Borlée 45.70 23 2 2 Davide Re 45.71 24 4 8 Luguelín Santos 45.73 25 5 3 Raymond Kibet 45.75 26 5 8 Martyn Rooney 45.75 27 2 3 Machel Cedenio 45.77 28 1 4 Lucas Carvalho 45.86 29 4 3 Mamoudou Hanne 45.89 30 2 4 Teddy Atine-Venel 45.90 31 2 6 Yoandys Lescay 45.93 32 5 7 Renny Quow 45.95 33 6 4 Mohammad Anas 45.98 34 1 3 Lucas Búa 46.00 35 5 1 Winston George 46.02 36 2 1 Luka Janežič 46.06 37 1 2 Collins Omae Gichana 46.10 38 2 9 Steven Solomon 46.27 39 3 4 Samuel García 46.37 40 3 2 Pieter Conradie 46.62 41 6 5 Samson Oghenewegba Nathaniel 46.63 42 3 1 Warren Hazel 46.96 43 2 7 Kimorie Shearman 47.05 44 4 2 Yilmar Herrera 47.18 45 6 8 Takamasa Kitagawa 47.35 46 6 7 Karabo Sibanda 47.44 47 1 1 Bachir Mahamat 47.50 48 5 4 Sailosi Tubuilagi 48.98 49 3 5 Narek Ghukasyan 49.70 2 8 Nery Brenes 4 6 Steven Gayle 6 2 Emmanuel Dasor

Semifinals The semifinals took place on 6 August in three heats as follows:

Heat 1 2 3 Start time 19:40 19:45 19:56 Photo finishlinklinklink

The first two in each heat ( Q ) and the next two fastest ( q ) qualified for the final. The overall results were as follows:

Rank Heat Lane Name Nationality Time Notes 1 1 5 Steven Gardiner 43.89 , 2 1 6 Nathon Allen 44.19 , 3 2 6 Wayde van Niekerk 44.22 4 3 5 Isaac Makwala 44.30 5 2 5 Baboloki Thebe 44.33 6 1 7 Fred Kerley 44.51 7 3 6 Demish Gaye 44.55 , 8 2 9 Abdalelah Haroun 44.64 , 9 2 2 Matthew Hudson-Smith 44.74 10 3 7 Gil Roberts 44.84 11 1 9 Kevin Borlée 45.10 12 1 4 Wilbert London 45.12 13 3 9 Jamal Walton 45.16 14 1 3 Óscar Husillos 45.16 15 2 4 Lalonde Gordon 45.20 16 3 3 Jonathan Borlée 45.23 17 3 2 Pavel Maslák 45.24 18 1 2 Rafał Omelko 45.37 19 2 8 Brian Gregan 45.42 20 2 7 LaShawn Merritt 45.52 21 3 8 Machel Cedenio 45.91 22 2 3 Boniface Ontuga Mweresa 45.93 23 3 4 Davide Re 45.95 24 1 8 Dwayne Cowan 45.96

Final The final took place on 8 August at 21:54. The results were as follows (photo finish):

Rank Lane Name Nationality Time Notes 6 Wayde van Niekerk 43.98 4 Steven Gardiner 44.41 3 Abdalelah Haroun 44.48 4 9 Baboloki Thebe 44.66 5 5 Nathon Allen 44.88 6 8 Demish Gaye 45.04 7 2 Fred Kerley 45.23 7 Isaac Makwala

References