Sergio Hierrezuelo Explained

Sergio Hierrezuelo Castellanos (born 15 March 1982) is a retired Cuban athlete who specialised in the 400 metres hurdles. He reached the semifinals of the 2005 World Championships. In addition, early in his career he won the silver medal at the 1999 World Youth Championships.

His personal best in the event is 49.11 seconds, set in 2005.

Competition record

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Representing
1999World Youth ChampionshipsBydgoszcz, Polandbgcolor=silver2nd400 m hrd (84.0 cm)49.95
2002Ibero-American ChampionshipsGuatemala City, Guatemalabgcolor=gold1st400 m hurdles50.60
2003Central American and Caribbean ChampionshipsSt. George's, Grenadabgcolor=silver2nd400 m hurdles50.26
Pan American GamesSanto Domingo, Dom. Rep.6th400 m hurdles50.34
6th relay3:06.27
2005Central American and Caribbean ChampionshipsNassau, Bahamas4th400 m hurdles49.66
World ChampionshipsHelsinki, Finland17th (sf)400 m hurdles49.66
2007Pan American GamesRio de Janeiro, Brazil10th (h)400 m hurdles49.90
relayDQ