sentences:  However, he won the silver medal at the 2007 Pan American Games in Rio de Janeiro, losing in the gold medal match to Brazilian hometown favorite Pedro Lima by a narrow 7-6 margin.He won Gold at the 2007 World Amateur Boxing Championships, where he beat Kakhaber Zhvania, Dmitrijs Sostaks, 2005 silver medalist Magomed Nurutdinov, future champion Jack Culcay-Keth, and Adem Kılıççı in the semifinal round.He beat Non Boonjumnong of Thailand in the finals, a match in which Andrade inflicted a standing eight count upon Boonjumnong and was leading by a score of 11-3 in the second round when Boonjumnong retired with an injury to his right arm.