UFC 266: Volkanovski vs. Ortega Tickets on Sale Friday, July 30 UFC returns to T-Mobile Arena with a thrilling pair of world championship bouts. The Ultimate Fighter coaches collide when UFC featherweight champion Alexander Volkanovski defends his title against No. 2 ranked contender Brian Ortega. The co-main event will see UFC women’s flyweight champion Valentina … [Read more...] about World Championship Doubleheader at UFC 266 In Las Vegas Sept. 25