Defending champion Novak Djokovic declared himself "happy with my performance" after cruising into the third round at Wimbledon as career-long rival Andy Murray suffered his earliest-ever exit from the All England Club.
Top seed Djokovic brushed aside Australia's Kokkinakis 6-1, 6-4, 6-2 and will next face Serbian compatriot Miomir Kecmanovic. "I'm very happy with my performance.
I started very well, solid from the back of the court," said Djokovic, who is looking to join Pete Sampras as a seven-time Wimbledon champion. "I made him work for every point and worked him around the court," added the 20-time major winner.
Murray, now 52 in the rankings, failed to break serve once against 2018 semi-finalist Isner, who unleashed 36 aces and 82 winners in total. "He didn't give me lots of chances," said Murray, whose previous earliest exits came in the third round in 2005 and 2021. "My game was in a good place.