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Roger Federer won his 300th Grand Slam match to reach the last 16 at the Australian Open with an impressive 6-4 3-6 6-1 6-4 win over Grigor Dimitrov.
The Swiss third seed was his usual imperious self in the first set and could have won in three had he been more effective on break points in the second set.
However, he took full advantage with an early break in the third and eased to victory to set-up a fourth-round clash with David Goffin.
"Grigor was playing well and I thought I was struggling a little bit," said Federer.
"It was an important start to the third set. Thankfully I got the early break and was able to stay in the lead."
Earlier in the day, Leyton Hewitt played the last singles match of his tennis career, losing 6-2 6-4 6-4 to David Ferrer in the second round.
Hewitt, who won two Grand Slam titles, received a standing ovation from his home crowd and admitted that it was the right time to retire.
"I left nothing in the locker room. My whole career I've given 100%," said the 34-year-old Australian.
"I love coming out here and competing. I've been so fortunate to have that opportunity 20 years in a row."
"Playing for Australia has always been my biggest honour," Hewitt told the Rod Laver Arena.
"I feel honoured to have had this support and this love from this crowd. It means so much for me.
"I've had so much success in big matches on this court and I feel fortunate to finish here. It's the perfect place to finish."
Seventh seed Kei Nishikori saw off Spain's Guillermo Garcia-Lopez 7-5 2-6 6-3 6-4 despite requiring treatment on his wrist.
French ninth seed Jo-Wilfried Tsonga won in three tight sets against compatriot Pierre-Hugues Herbert, triumphing 6-4 7-6 (9-7) 7-6 (7-4).
In the women’s draw, number one seed Serena Williams took just 45 minutes to beat 18-year-old Darya Kasatkina 6-1 6-1 as she cruised into the next round.
It was a little more difficult for Maria Sharapova who needed three sets to beat unseeded American Lauren Davis, 6-1 6-7 (5-7) 6-0.