Juan_Hernández_Sierra
Juan Hernández Sierra
Cuban boxer
Juan Hernández Sierra (born March 16, 1969) is a retired amateur boxer from Cuba, who competed in the welterweight (< 67 kg) division during the 1990s. He represented his native country at three consecutive Summer Olympics, starting in 1992 in Barcelona, Spain. After having won silver on his Olympic debut he repeated that feat in Atlanta, United States in 1996.
He became world champion in his division four times, in 1991, 1993, 1995 and 1999.