Free Online HD on Lookmovie. UFC Fight Night 51: Bigfoot vs. Arlovski was a mixed martial arts event held on September 13, 2014 at Ginásio Nilson Nelson in Brasília, Brazil. The event was headlined by a heavyweight rematch between Antônio Silva and Andrei Arlovski. Their first fight at Strikeforce: Heavy Artillery ended in a unanimous decision victory for Silva.