Melvin Guillard will be looking for his third straight victory in the UFC when he steps into the octagon to face Nate Diaz at Ultimate Fight Night 19, on Wednesday September 16th. When he enter the Cox Convention Center in Oklahoma City, Guillard will be sporting his new walkout tee from Silver Star. Known as the “Young Assassin”, the shirt sports a few graphic references to the moniker, a skeletal assassin with a smoking gun on the front of the shirt, and two smoking colt 45s on the back.