2009 World Championships in Athletics – Women's 400 metres

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The women's 400 metres at the 2009 World Championships in Athletics was held at the Olympic Stadium on 15, 16 and 18 August. The world-leader prior to the competition, Sanya Richards, was regarded as the favourite in the event, although her previous failure to convert circuit dominance to major championship success raised some doubts. Reigning Olympic and world champion Christine Ohuruogu entered the championships as only the 25th fastest in the world that year, although a low-key run up also preceded her previous victories. Jamaicans Shericka Williams and Novlene Williams-Mills were predicted as possible medallists, while Russian Antonina Krivoshapka held the second fastest time in the world prior to the tournament.Landells, Steve (2009-08-09). [http://berlin.iaaf.org/news/kind=109/newsid=52551.html Women's 400m - PREVIEW]. IAAF. Retrieved on 2009-08-16. [https://web.archive.org/web/20090909064944/http://berlin.iaaf.org/news/kind=109/newsid=52551.html Archived] 2009-09-08.

All the favoured athletes made it through the heats and Motswana Amantle Montsho, a 2008 Olympic finalist, had the fastest time of the day with 50.65 seconds. Unusually, two of the race favourites, Richards and Ohuruogu, faced each other in the first round, with the Richards taking first place.Landells, Steve (2009-08-15). [http://berlin.iaaf.org/news/kind=108/newsid=52753.html Event Report - Women's 400m - Heats] {{Webarchive|url=https://web.archive.org/web/20090818034840/http://berlin.iaaf.org/news/kind=108/newsid=52753.html |date=2009-08-18 }}. IAAF. Retrieved on 2009-08-19. The two faced each other again in the semi-finals, and Richards again beat the defending champion. The other two semi-finals were much faster, however, with five athletes breaking 50 seconds. Shericka Williams and Debbie Dunn set personal bests to qualify in the second final, and Montsho and Williams-Mills had run season's best to qualify – Aliann Pompey's national record was not enough to reach the final.Landells, Steve (2009-08-16). [http://berlin.iaaf.org/news/kind=108/newsid=52995.html Event Report - Women's 400 Metres - Semi-Final] {{Webarchive|url=https://web.archive.org/web/20120407111228/http://berlin.iaaf.org/news/kind=108/newsid=52995.html |date=2012-04-07 }}. IAAF. Retrieved on 2009-08-19.

In the final, Richards started the race quickly, leading the first 100 m. Krivoshapka pulled slightly ahead of her at the halfway, but Richards regained the lead on the final bend. She remained in front through the home straight and won in a world-leading 49 seconds flat. Williams overtook Krivoshapka on the final stretch to take silver with a personal best of 49.32 seconds, and the Russian retained third place for the bronze. Williams-Mills was close behind for fourth place, but it was Ohuruogu's fifth-place finish that drew more attention.Landells, Steve (2009-08-18). [http://berlin.iaaf.org/news/kind=108/newsid=53290.html Event Report - Women's 400m - Final] {{Webarchive|url=https://web.archive.org/web/20090921015047/http://berlin.iaaf.org/news/kind=108/newsid=53290.html |date=2009-09-21 }}. IAAF. Retrieved on 2009-08-19.

Richards, often the fastest 400 m runner on the athletics circuit, won her first major gold medal of her career with the 38th sub-50 clocking of her career – the most of any athlete.Brown, Matthew (2009-08-18). [http://berlin.iaaf.org/news/kind=114/newsid=53375.html Richards – ‘I enjoyed every step of my race’] {{Webarchive|url=https://web.archive.org/web/20090821065501/http://berlin.iaaf.org/news/kind=114/newsid=53375.html |date=2009-08-21 }}. IAAF. Retrieved on 2009-08-19. After a lacklustre season, the 2007 World Champion Ohuruogu could not repeat the performance that had made her Olympic champion the previous year.Kessel, Anna (2009-08-18). [https://www.theguardian.com/sport/2009/aug/18/christine-ohuruogu-sanya-richards-world-championships No miracle for Christine Ohuruogu as Sanya Richards takes gold]. The Guardian. Retrieved on 2009-08-20. Shericka Williams had twice lowered her personal best, and her silver medal-winning performance was 0.02 seconds outside of Lorraine Fenton's Jamaican record.Reid, Paul A. (2009-08-19). [http://www.jamaicaobserver.com/sports/html/20090818T230000-0500_157815_OBS_FORMER_COACH_LAUDS_WILLIAMS__SILVER_AT_WORLD_CHAMPIONSIPS.asp Former coach lauds Williams' silver at World Championships] {{Webarchive|url=https://web.archive.org/web/20090822092020/http://www.jamaicaobserver.com/sports/html/20090818T230000-0500_157815_OBS_FORMER_COACH_LAUDS_WILLIAMS__SILVER_AT_WORLD_CHAMPIONSIPS.asp |date=2009-08-22 }}. Jamaica Observer. Retrieved on 2009-08-20. Krivoshapka's bronze was Russia's first medal in the event in the post-Soviet era.