Courtesy of Damon Martin and official MMAWeekly.com content partner Bleacher Report . It’s been nearly three years since Matt Serra last fought in the UFC , and everyone was curious if the Renzo Gracie black belt was retired or just taking some serious time off from the sport. Serra’s career zig-zagged over 11 years with most of his fights taking place in the Octagon, but following his last bout against Chris Lytle in 2010, the writing was on the wall, and truth be told, he was okay if his career was at an end. Like a lot of athletes, however, using the word “retirement” is almost taboo. “It was like a couple of years ago after my fight with Chris Lytle, I just never felt the need to make it official,” Serra told MMA ‘s Great Debate Radio recently.  “I’ve had a great career I feel.