Eight-time Australian Open champion Novak Djokovic beat Milos Raonic in four sets to advance to the quarterfinals and register his 300th win in a Grand Slam match.

Top-ranked Djokovic is just the second player to reach the 300-win milestone after Roger Federer.

Djokovic hurt a stomach muscle when he fell during his third-round victory over Taylor Fritz, and he skipped practice Saturday.

There were concerns he wouldn't recover in time for his match against Raonic but the defending champion went onto Rod Laver Arena without showing any noticeable signs of trouble. He was wearing tape above his right hip.

"Well, I did a lot of recovery...I mean, a lot of, lots of time with my physio on the table, trying to rest as much as I can," Djokovic said. "Did different treatments with different devices. You know, just pills, painkillers and stuff like this with medical team of Tennis Australia and Australian Open, that definitely helped a lot. And ATP physios, I want to thank them again for being available for me and for my physiotherapist and giving their best to, you know, allow me to be in the condition to compete."

The 7-6 (4), 4-6, 6-1, 6-4 win extended Djokovic's unbeaten streak to 12 straight against Raonic, the 2016 Wimbledon finalist.

Djokovic said he's going to prepare as best as he can for his next match against Alexander Zverev, but only because it's one of the big four tournaments in tennis.

He said: "If it's any other tournament than a Grand Slam, then I'd withdraw from that event, that's for sure. But because it's a Grand Slam I want to do my best to recover.''

Information from The Associated Press was used in this report.