UFC Fight Night 117: Saint Preux vs. Okami was a mixed martial arts event produced by the Ultimate Fighting Championship held on September 23, 2017 at Saitama Super Arena in Saitama, Japan. A light heavyweight rematch between former UFC Light Heavyweight Champion Maurício Rua and former interim title challenger Ovince Saint Preux was expected to headline this event. Rua withdrew from the fight due to a knee injury and was replaced by returning veteran, former UFC Middleweight Championship challenger Yushin Okami.

UFC Fight Night 117: Saint Preux vs. Okami

UFC Fight Night 110: Lewis vs. Hunt was a mixed martial arts event produced by the Ultimate Fighting Championship held on 11 June 2017 at the Spark Arena in Auckland, New Zealand. A heavyweight bout between Derrick Lewis and the 2001 K-1 World Grand Prix winner and former interim title contender Mark Hunt served as the main event.