UFC 179: Aldo vs. Mendes 2 was a mixed martial arts event held on October 25, 2014, at Ginásio do Maracanãzinho in Rio de Janeiro, Brazil. The event was headlined by a Featherweight Championship rematch between the current champion José Aldo, and top contender Chad Mendes. Their first fight at UFC 142, also contested in Rio de Janeiro, ended in a first round knockout victory in favor of Aldo.