Novak Djokovic rallied from a set down to beat Marin Cilic and stay on track for a fifth Paris Masters title on Friday.
Djokovic, who will be number one on Monday, struggled in the first set with his serve, but bounced back brilliantly to claim a 4-6, 6-2, 6-3 victory and stretch his unbeaten run to 21 matches. Also, this is the 16th time Djokovic has triumphed over Cilic in 18 career meetings.
The Serb will now turn his attention to the semifinals where he will face Roger Federer in an highly-anticipated match.
Federer defeated Kei Nishikori 6-4, 6-4 to remain on track for a first Masters 1000 title this season.
In an earlier match, Dominic Thiem came back from a set down to knock out defending champion, Jack Sock, with a 4-6, 6-4, 6-4 victory and reach the semifinals of a Masters 1000 event for only the fourth time in his career.
“I’m in the semifinals of a Masters 1000 only for the fourth time,” Thiem said. “It means a lot for me because I didn’t do too well in the previous years in this part of the season. So it’s something really special to reach the semifinals.”
Thiem will next face Russia’s Karen Khachanov, who outclassed an out of sorts Alexander Zverev 6-1, 6-2 to make progress. Zverev received medical attention on an aching shoulder late in the first set and then posted an error-strewn display in the second set.