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When Brian Ortega meets Chan Sung Jung in the UFC Fight Night 180 headliner on Saturday at the Flash Forum in Abu Dhabi, United Arab Emirates, the five-round affair could determine the identity of the next No. 1 contender for the undisputed Ultimate Fighting Championship featherweight crown. At the very least, reigning champion Alexander Volkanovski figures to have a vested interest in the proceedings.

Ortega will return to the cage for the first time since he suffered his first professional setback—a fourth-round technical knockout loss to Max…