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 Representing 1999World Youth ChampionshipsBydgoszcz, Poland2nd400 m hrd (84.0 cm)49.952002Ibero-American ChampionshipsGuatemala City, Guatemala1st400 m hurdles50.602003Central American and Caribbean ChampionshipsSt. George's, Grenada2nd400 m hurdles50.26Pan American GamesSanto Domingo, Dom. Rep.6th400 m hurdles50.346th relay3:06.272005Central American and Caribbean ChampionshipsNassau, Bahamas4th400 m hurdles49.66World ChampionshipsHelsinki, Finland17th (sf)400 m hurdles49.662007Pan American GamesRio de Janeiro, Brazil10th (h)400 m hurdles49.90 – relayDQ
References