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.

• Zuffa
• Andrei Arlovski
• Antonio Silva
• Gleison Tibau
• Piotr Hallmann
• Leonardo Santos
• Efrain Escudero
• Santiago Ponzinibbio
• Wendell Oliveira