CNN  — 

Novak Djokovic is still yet to lose a set at the French Open after he defeated Karen Khachanov 6-4 6-3 6-3 to reach the quarterfinals.

The result means that, apart from his default at the US Open earlier this month, Djokovic continues his unbeaten run in 2020 as he chases an 18th grand slam title.

Victory over world No. 16 Khachanov – an opponent who beat him in the 2018 Paris Masters final – hands Djokovic a meeting with Pablo Carreno Busta, who defeated Daniel Altmaier 6-2 7-5 6-2 on Monday.

“Carreno Busta is someone that is obviously very solid,” Djokovic said of his quarterfinal opponent. Carreno Busta reached the US Open semifinals as a result of Djokovic defaulting.

“I think he actually improved his game in the last 12, 15 months on all the surfaces. I mean, playing semifinals in (the) US Open proves it.

“I know he has done it before. He’s climbing the rankings again.”

Djokovic plays a backhand against Khachanov as he progressed to the quarterfinals.

His latest victory also means Djokovic will contest his 14th quarterfinal in Paris, a record he shares with Rafael Nadal.

Both players were pre-tournament favorites and appear to be on a collision course to face off in the final after Nadal reached the quarters on Sunday. The Spaniard is also yet to drop a set at this year’s French Open.

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On Djokovic’s side of the men’s draw, Stefanos Tsitsipas and Andrey Rublev also booked places in the quarterfinals with respective victories over Grigor Dimitrov and Marton Fucsovics.

In the women’s draw, Petra Kvitova overcame Zhang Shuai 6-2 6-4 to reach her first Roland Garros quarterfinal since 2012 where she will face maiden quarterfinalist Laura Siegemund.

Australian Open champion Sofia Kenin lost the first set to Fiona Ferro but came back to win 2-6 6-2 6-1.