A middleweight contest between Thales Leites and Tom Watson has been promoted to main-card status at next month’s UFC 163 event. The promotion came following the loss of a planned Josh Koscheck vs. Demian Maia bout, which was recently removed from the evening’s lineup. Additionally, the night’s preliminary bouts have undergone a slight shuffle, as a flyweight matchup of Ian McCall vs. Iliarde Santos was promoted to the evening’s FX broadcast in favor of a featherweight contest of Josh Clopton vs. Rany Yahya, which now streams on Facebook