By Edward Chaykovsky
Welterweight contender Isaac Hlatshwayo (30-6-1, 10KOs) has announced his retirement from boxing. The veteran lost five out of his last six fights. He held the IBO title at 135 and 147-pounds. And he also captured the IBF's welterweight title with a split decision over Delvin Rodriguez in August of 2009. During his career he also got victories over Nate Campbell, Phillip Ndou, Cassius Baloyi and Kaizer Mabuza.