William Collazo Gutiérrez (born 31 August 1986 in Antilla, Holguín) is a Cuban sprinter who specializes in the 400 metres.
Career He won a bronze medal in the 4 x 400 metres relay at the 2005 Central American and Caribbean Championships. He also competed at the 2007 World Championships, the 2008 Olympic Games and the 2009 World Championships, but without reaching the final round.
His personal best time is 44.93 seconds, achieved at the World Championships in August 2009 in Berlin. He also has 21.27 seconds in the 200 metres, achieved in March 2004 in Havana.
Personal best 200 m: 21.04 s (wind: +0.7 m/s) – La Habana, 23 May 2010 400 m: 44.93 s – Berlin, 19 August 2009 400 m (indoor): 46.31 s – Doha, 13 March 2010
International competitions Representing 2005ALBA GamesHavana, Cuba4th200 m 21.49 s (0.0 m/s)1st400 m47.16 s1st4 × 400 m3:08.14 minCentral American and Caribbean ChampionshipsNassau, Bahamas8th400 m46.58 s3rd4 × 400 m3:02.33 min2006NACAC Under-23 ChampionshipsSanto Domingo, Dominican Republic3rd400 m45.72 sCentral American and Caribbean GamesCartagena, Colombia7th400 m46.95 s6th (h)4 × 400 m3:08.71 min2007ALBA GamesCaracas, Venezuela1st400 m45.68 s1st4 × 400 m3:06.84 minPan American GamesRio de Janeiro, Brazil4th400 m45.45 s – (h)4 × 400 mDQ World ChampionshipsOsaka, Japan19th (sf)400 m45.54 s2008Ibero-American ChampionshipsIquique, Chile1st4 × 400 m3:03.22 minCentral American and Caribbean ChampionshipsCali, Colombia4th400 m46.04 s 1st4 × 400 m3:02.10 minOlympic GamesBeijing, China13th (sf)400 m45.06 s10th (h)4 × 400 m3:02.24 min2009ALBA GamesHavana, Cuba1st400 m45.74 sCentral American and Caribbean ChampionshipsHavana, Cuba 1st400 m44.96 s 1st4 × 400 m3:03.26 minWorld ChampionshipsBerlin, Germany7th (sf)400 m44.93 s2010World Indoor ChampionshipsDoha, Qatar 2nd400 m46.31 sIbero-American ChampionshipsSan Fernando, Spain 2nd400 m45.33 s 1st4 × 400 m3:04.86 min2011World ChampionshipsDaegu, South Korea21st (sf)400 m46.13 sPan American GamesGuadalajara, Mexico4th400 m45.33 s 1st4 × 400 m2:59.43 min2012Ibero-American ChampionshipsBarquisimeto, Venezuela 2nd400 m45.81 s 1st4 × 400 m3:00.43 minOlympic GamesLondon, United Kingdom3rd (h)14 × 400 m3:00.55 min2014World RelaysNassau, Bahamas5th4 × 400 m3:00.61 minCentral American and Caribbean GamesXalapa, Mexico1st4 × 400 m3:00.70 min A2015IAAF World RelaysNassau, Bahamas10th4 × 400 m3:03.73 minNACAC ChampionshipsSan José, Costa Rica4th (sf)400m46.30 s3rd4 × 400 m3:01.22 minWorld ChampionshipsBeijing, China7th4 × 400 m3:03.05 min2016Ibero-American ChampionshipsRio de Janeiro, Brazil7th400 m45.92 s –4 × 400 mDQOlympic GamesRio de Janeiro, Brazil6th4 × 400 m2:59.53 min2017IAAF World RelaysNassau, Bahamas5th4 × 400 m3:03.60 minWorld ChampionshipsLondon, United Kingdom6th4 × 400 m3:01.10 min 1: Did not finish in the final.
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