British No 1 Draper was left hobbled after a brutal run to the last 16 and called time after two sets against the classy Alcaraz, who could meet Djokovic in the quarter-finals

Carlos Alcaraz and Novak Djokovic have set up a quarterfinal showdown at the Australian Open. Tuesday's contest will be their eighth head-to-head matchup, but their first at Melbourne Park and their first that is neither a semifinal nor a final.