Juan Hernández Sierra
Juan Hernández Sierra is a retired amateur boxer from Cuba, who competed in the welterweight 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.
Olympic results
1992- Defeated Said Bennajem 6–0
- Defeated Jin-Chul Jun RSC 2
- Defeated Sören Antman RSC 3
- Defeated Aníbal Acevedo 11–2
- Lost to Michael Carruth 10–13
- Defeated Jozsef Nagy RSC 2
- Defeated Vadim Mezga 12–2
- Defeated Nurzhan Smanov 16–8
- Defeated Marian Simion 20–7
- Lost to Oleg Saitov 9–14
- Defeated Stephan Nzue Mba RSC 3
- Defeated Mohamed Salad Marmouri RSC 3
- Lost to Yermakhan Ibraimov 9–16