There are very limited fights available in the UFC, that constitute the best of the best challenging each other. Jose Aldo vs Anthony Pettis would have been one of them. Alas it isn't going to happen, not in the foreseeable future. Instead once Pettis heals from knee surgery, he will defend his lightweight title against Gilbert Melendez.
Having the potential super fight with Aldo fall through isn't as disappointing as I would have thought. It's still disappointing, but the replacement is the best the UFC could have done outside the super fight.
The path Melendez took to acquire the contender spot is different than most. Originally the UFC had tried to pair him against Khabib Nurmagomedov (a name I most likely misspelled). The undefeated Russian has been on a 21-0 tear, with most competitors appearing to be avoiding him in the UFC. The match up was significant, in that it was an imposing challenge for both combatants. The winner of which was sure to be in the top echelon of title contention.
In his debut in the organization, Melendez suffered a controversial decision loss to then champion Benson Henderson. Audiences were split on the outcome. Looking to climb back up the ranks, he went balls to the wall, battling Diego Sanchez in a fight of the year candidate for 2013. Check it out here.