Watch on HDtoday. Australia’s fighting emperor and former unified world champion, George Kambosos Jr., is on a mission for a new belt. Standing in his way is a Ukrainian fight legend, Vasyl Lomachenko, a three-division world champion intent on writing another triumphant chapter in his Hall of Fame career. Lomachenko and Kambosos clash for the vacant IBF lightweight world title as part of a world title tripleheader at RAC Arena in Perth, Australia.