Frankie Edgar is certainly familiar with the art of the rematch. After having edged out a narrow decision win over B.J. Penn to win the UFC lightweight title, Edgar granted Penn a rematch and earned a much more emphatic win. He then fought Gray Maynard to a draw in what was already a rematch, resulting in them fighting yet again, this time with Edgar earning the dramatic knockout victory.
Now, having lost an exciting, competitive fight with Ben Henderson, Edgar will be in the role of challenger receiving a second chance.
Frankie getting that rematch doesn't seem to sit well with Penn, who talked about the situation on MMA Uncensored Live (transcribed by MMA Mania):
Honestly, I don't think he should have [received a rematch]. He could make the case for it. He gave me a rematch. He had to give Gray (Maynard) the rematch, because they had a draw. I'd like to see Benson Henderson fight Nate Diaz. Fight someone else.
I got the rematch, some people say it was a close fight or not. Frankie's fight, I guess you could have made a case that he did well with Benson. But to me, I look at fights -- I don't know who took the guy down more. I don't look at stuff like that. Who woke up in the morning and who was in more pain? I think Frankie Edgar was hurt the next morning. Benson told me he (Edgar) had his 'stunner shades' on. I think he probably got hurt more.
Personally, I never like the "who is hurting more?" line of scoring. This has also been popularized going back for years in boxing with people explaining that the easiest way to score a round is "who would you rather be?"
Of course, that ignores things like that many people would much rather take a hard punch to the face than leg kicks or body work, but I still think a hard shot to the head should be scored more highly than a solidly landed leg kick. The rules are in place and explain how to score a fight, if you can't follow those rules, you either can't score a fight or the rules need to be altered.
If Penn's argument is "I feel Henderson clearly won at least 3 rounds and Edgar has no case that he won the fight, so why have a rematch?" Fine. But the idea that Edgar doesn't deserve a rematch because he probably felt worse in the morning is crazy.
Regardless, Penn is "retired" so I guess we shouldn't put much stock in what has to say.