Join MMA Nation tonight at 7:30 p.m. ET for live results and play-by-play for UFC 142: Aldo vs. Mendes. Tonight's UFC event is headlined by a featherweight title fight between champion Jose Aldo and challenger Chad Mendes. In the co-main event, Vitor Belfort faces off against Anthony Johnson. Tonight's fights take place at the HSBC Arena in Rio de Janeiro, Brazil. They will air on Facebook, FX and pay-per-view.