As Brett Okamoto of ESPN noted, that's the same night as Gennady Golovkin vs. Canelo Alvarez, one of the most anticipated boxing matches of the year.
Rockhold, 32, is looking to rebound after getting knocked out by Michael Bisping in June 2016 at UFC 199. That halted a five-match winning streak that included Rockhold claiming the UFC middleweight belt after defeating Chris Weidman at UFC 194 in December 2015.
Rockhold is 15-3 overall in his professional career, with injuries delaying his comeback to the Octagon following his loss to Bisping.
Branch (21-3), meanwhile, is on an 11-match winning streak and last beat Krzysztof Jotko at UFC 211 in May. The 35-year-old has climbed in the middleweight ranks and could put himself in the running for a title fight with a victory over Rockhold.
Certainly, Rockhold—currently ranked No. 3 among middleweight division contenders—could make himself an attractive figure for another title fight with a convincing win over Branch.