MELBOURNE, Australia -- Novak Djokovic ensured there wouldn't be consecutive upset losses at Rod Laver Arena on Sunday when he beat Fabio Fognini 6-3, 6-0, 6-2 in a fourth-round match at the Australian Open.
Immediately following fellow Serbian Ana Ivanovic's win over top-seeded and five-time champion Serena Williams, Djokovic raced to a 4-1 lead in the first set in just 19 minutes and won in 1 hour, 33 minutes to advance to the quarterfinals of his 19th consecutive Grand Slam.
It was also Djokovic's 28th consecutive win dating back to his loss to Rafael Nadal in last September's U.S. Open final. The pair later traded the No. 1 and No. 2 rankings.
Djokovic the entertainer has made a comeback, adding to his repertoire of impersonations by poking fun at his new coach Boris Becker in front of a roaring crowd at the Australian Open.
Long before he was a top-ranked player, Djokovic had earned the nicknames "Court Jester" and "Joker" for his impressions of fellow pros, notably Maria Sharapova's shrieks, Rafael Nadal tugging at the back of his shorts, John McEnroe's tantrums. They weren't always well-received.
The 46-year-old Becker, a six-time Grand Slam champion, was seated among Djokovic's supporters Sunday, red in the face and laughing as he watched the Serbian star imitate his characteristic rocking motion for serves.
Djokovic recruited Becker ahead of the Australian Open to help him try to win a fourth straight title, He took a step closer to Sunday by beating his childhood friend. The win ushered Djokovic into his 19th straight Grand Slam quarterfinal.
After the match, Djokovic walked back onto the court for an interview with Jim Courier, one of Becker's main rivals in the 1990s, who asked him: "Back in the day when you did impressions, did you have any of Boris?"
Seated in the stands, Becker laughed and wagged his finger.
"Uh, yes. I did," Djokovic replied, to the crowd's delight. "But he hasn't seen it yet."
Djokovic then requested a ball and approached the baseline, where he began rocking his body back and forth with his ball on his racket to build momentum for his toss, which he then threw into the air, swung and missed as he stumbled forward.
"This was in your better days Boris, and today you look like this," Djokovic smiled, as he walked forward like a stooped old man with a limp. Becker recently had ankle surgery and hasn't been able to hit balls with the six-time Grand Slam winner since starting his new coaching job.
After the crowd quieted, Djokovic said he couldn't wait to return Becker's serve and added: "I've got to give him credit, he's trying. He's working every day."
Later in his post-match news conference, Djokovic noted that the impersonation was not perfect: "I have to gain a few kilos and color my hair in order to do the proper Becker imitation."
In Melbourne, Djokovic and Nadal could face each other in the final, setting the stage for a rematch of their epic five-setter in 2012.
Djokovic's next opponent will be the winner of an evening match between No. 17 Tommy Robredo and No. 8 Stanislas Wawrinka -- Djokovic held on in 2013 to beat Wawrinka here in a fourth-round match that lasted more than 5 hours.
"He's capable of winning against anyone," Djokovic said of Wawrinka. "If I get to play him .... again hopefully it's not going to go 5 hours like last time."
No. 3-seeded David Ferrer beat Florian Mayer 6-7 (5), 7-5, 6-2, 6-1 and will next play No. 7 Tomas Berdych, who beat No. 19 Kevin Anderson 6-2, 6-2, 6-3.