Despite losing his lightweight belt to Frankie Edgar, B.J. Penn is still considered one of the greatest lightweights of all time. However, Edgar has already made a case at surpassing him with back-to-back wins over the former champion and two title defenses.
One of the most competitive divisions in the sport, the lightweight division has never seen a UFC champion who defended their title more than three time consecutively.
This makes it hard to differentiate which lightweights have been the greatest ever, but that won't stop us at Bleacher Report from attempting to do just that.