MEXICO CITY, MEXICO - JUNE 13:  (L-R) Cain Velasquez of the United States and Fabricio Werdum of Brazil face off prior to their UFC heavyweight championship bout during the UFC 188 event inside the Arena Ciudad de Mexico on June 13, 2015 in Mexico City, Mexico. (Photo by Jeff Bottari/Zuffa LLC/Zuffa LLC via Getty Images)