LONDON - Novak Djokovic isn't facing much of a test so far in the defence of his Wimbledon title.

He's played three matches, won all in straight sets, and never dropped more than four games in any set.

The top-ranked Djokovic disposed of Bernard Tomic 6-3, 6-3, 6-3 Friday on Centre Court to sail into the fourth round and bolster his bid for a third Wimbledon title and ninth Grand Slam championship.

"I was hoping that I can play better and better as the tournament progresses and that's exactly what is happening right now," said Djokovic, who extended his career record against Tomic to 4-0. "I think as I'm moving on through the tournament I feel more confident on the court."

Djokovic needed only 1 hour, 32 minutes to put away Tomic, serving 15 aces, breaking four times, never losing serve and making only 12 unforced errors.

" I am pleased with the way I'm playing, definitely," he said. "It's very close to where I want to be. Hopefully in the second week I can play even better."

He'll next face big-serving Kevin Anderson, the 14th-seeded South African, who beat Leonardo Mayer of Argentina 6-4, 7-6 (6), 6-3.

Also advancing were French Open champion Stan Wawrinka, who swept Ferando Verdasco 6-4, 6-3, 6-4; Richard Gasquet, who dismantled No. 11 Grigor Dimitrov 6-3, 6-4, 6-4 on Centre Court; and Belgium's David Goffin, who downed Marcos Baghdatis in straight sets.

Nick Kyrgios —the 20-year-old Australian who stunned Rafael Nadal here last year — served 34 aces and hit flashy winners from all over the court to upset seventh-seeded Milos Raonic of Canada 5-7, 7-5, 7-6 (3), 6-3 to reach the round of 16 for the second year in a row.

"I don't fear anyone," the 26th-seeded Kyrgios said. "I definitely feel I'm playing better tennis than last year."