UFC 188: Velasquez vs. Werdum (2015)
There can only be one.
UFC 188: Velasquez vs. Werdum was a mixed martial arts event held on June 13, 2015, at Arena Ciudad de México in Mexico City, Mexico. The event was headlined by a UFC Heavyweight Championship unification bout between then champion Cain Velasquez and then interim champion Fabrício Werdum.