With the calendar reading Friday the 13th it seems logical to look at a few UFC fighters who have dealt with their share of bad luck in the Octagon. In some cases, injuries have ravaged otherwise brilliant careers. In others, fate dictated a disappointing defeat or questionable judging brought down hopes of a title-shot. In all, the involved athletes simply couldn’t catch a break…unless it involved a bone, of course. (Photos by USA Today Sports Images)