Before he was a murderer, Edwin Valero was a world champion. And before reaching title success, he became an early online sensation from devastating sparring sessions. Word quickly spread of this savage Venezuelan puncher on his ruthless rise. Sadly, his violent nature went beyond the ring. In 2010, Valero murdered his wife and took his own life in jail just days later at 28 years old. Once built as a future challenger to Manny Pacquiao, his career finished at 27 wins with 27 knockouts. One of b