A big heavyweight division bout has been added to UFC On Fox X as Gabriel Gonzaga is set to battle Stipe Miocic. Gonzaga has won four of five in his second UFC run, with a notable victory over Shawn Jordan at UFC 166. Miocic is coming off of the biggest victory in his MMA career, when he defeated Roy Nelson by decision at UFC 161. UFC On Fox X takes place on January 25th from the United Center in Chicago, Illinois with Ben Henderson and Josh Thomson headlining.