UFC: Robert Whittaker’s secret weapon for Israel Adesanya rematch Sport by Nick Walshaw 11th May 2021 6:53 AM Robert Whittaker has credited undefeated boxer Tim Tszyu for shaping the striking game he now believes will win back the UFC middleweight crown. Set to fight for UFC gold later this year, Whittaker has told News Corp his sparring sessions with Tszyu, which have only ever taken place behind closed doors, will also now form a key part of his preparations for next title fight, tipped for September or October. Australia's first UFC champion revealed the son of Hall of Famer Kostya Tszyu had been instrumental in his most recent win over American Kelvin Gastelum, which UFC greats like Michael Bisping and Daniel Cormier labelled a "masterclass".