At 2:13 of the third round at UFC 188 in Mexico City, Fabricio Werdum submitted Cain Velasquez via guillotine choke to win the UFC Heavyweight championship. This was Velasquez’ first fight in 602 days due to injury and was clearly affected by the altitude of Mexico City, Mexico. Cain was extremely sluggish towards the end of the first round and slowed more and more as the fight went on.