Continue on to the slideshow for an all-access look at welterweight contender Shawn Porter (21-0-1, 14 KO’s) puts in work ahead of his rematch with Julio Diaz by sparring some rounds with middleweight prospect Luis ‘Cuba’ Arias (6-0, 3 KO’s). Porter faces off with Diaz on Sept. 12 while Arias fights on ‘The One’ undercard at the MGM Grand two nights later.

All photos courtesy of Chris Robinson (www.HustleBoss.com)

Chris Robinson can be reached at Trimond@aol.com