Novak Djokovic refused to let anything stop his pursuit of a record 25th Grand Slam trophy in the Australian Open quarterfinals. Not a problem with his left leg. Not an early deficit. And not the kid across the net,

The Australian Open stages the match of the tournament so far as two of the sport’s biggest stars meet in the quarter-final

Djokovic’s four-set victory over his young rival sets up a semifinal with second-seeded Alexander Zverev and keeps alive his hope of a record 25th Grand Slam title.