Former world No.1 Justine Henin backed Aryna Sabalenka to retain her Australian Open crown while she assessed Emma Raducanu's chances in Melbourne.

Sabalenka - shooting for her third consecutive title at Melbourne Park - will take on US Open 2017 champion Sloane Stephens. Five Aussies will be in action - including Aleksandar Vukic, Daria Saville, ...