With Michael Chiesa out of the UFC Fight Night 91 main event on July 13th due to a ruptured disc, Tony Ferguson has been downgraded to co-main event status for his new fight against Landon Vannata. You may recall that Tony Ferguson had a recent interview where he was not pleased with the fact that when he withdrew from an April 16th main event against Khabib Nurmagomedov, Khabib accepted a main card bout against newcomer Darrell Horcher.

Now that it's Ferguson who has to fight a debutant on short notice, Nurmagomedov hasn't forgotten Ferguson's comments, and has since hit back on Twitter.

Tony,now u going to fight with a debutant ? @TonyFergusonXT #историяповторяется — khabib nurmagomedov (@TeamKhabib) June 28, 2016

Last year, Khabib's primary Twitter target was Anthony Pettis. When Nurmagomedov pulled out of his UFC 187 bout with Donald Cerrone, Pettis said that "karma is a bitch," in reference to Khabib repeatedly calling him out for his injury problems, as well as accusing Pettis of being "scared" to fight him. Literally days later, Pettis withdrew from a fight vs. Myles Jury with an injury. Nurmagomedov took the high road, wishing Pettis a speedy recovery.