Watch a Preview of Tonight’s Profile on Jacobs: http://s.sho.com/2mwTggw

When professional boxer Daniel Jacobs was diagnosed with cancer in 2011 doctors told him he’d never fight again.  But the Brooklyn-born Jacobs defied odds to defeat cancer and become middleweight world champion and one of the brightest young stars in the sport.  On the eve of one of the biggest fights of his career, Jacobs’ courageous triumph over cancer and his unlikely rise to world champion is featured on 60 MINUTES SPORTS tonight/Tuesday at 8 p.m. ET/PT on SHOWTIME.