MELBOURNE, Australia — Australian two-time bantamweight world title challenger Jason "Mayhem" Moloney and New Zealand-born heavyweight contender Junior Fa hope to showcase their talents for the home region fans at Marvel Stadium in Melbourne, Australia, on the undercard of the George Kambosos Jr.-Devin Haney undisputed lightweight world title showdown. The Kambosos-Haney world championship event is projected to be one of