Defending champion Novak Djokovic eased into round four of the Australian Open by beating Yoshihito Nishioka. Djokovic breezed through 6-3 6-2 6-2 in only 85 minutes. Djokovic, this year’s second seed, was ruthless and efficient with his serving, breaking Nishioka five times from six opportunities.

“This was one of my best serving matches,” said the Serb. Djokovic, 32, will play Diego Schwartzman after the Argentine 14th seed beat Dusan Lajovic 6-2 6-3 7-6 (9-7). The former world number one lost only one point on his own serve in the opening two sets against 24-year-old Nishioka, and he won 93% of points on his first serve.