On Friday, Djokovic defeated his fellow Serb Filip Krajinovic 7-6 (7), 6-3 to enter the last eight of the tournament for the 14th straight year.

 

"It was definitely one of the longest sets I think I have ever played," said Djokovic as per the ATP Tour website after the match. "Never easy, I think, emotionally to play against someone that is one of my best friends for many years...I think the first set could have gone a different way, as well.

 

"Fortunately for me it went my way and that allowed me to swing through the ball a bit more in the second set. Maybe physically and mentally, he dropped a level and I used my opportunities and capitalised to win in straight sets."

 

In other Round of 16 match, nine-time champion Nadal cruised past 2019 Monte-Carlo Masters finalist Dusan Lajovic 6-1, 6-3 to reach his 15th Rome quarter-final.

 

"I played at I think a very positive level of tennis. Of course it needs to keep improving. I need to keep working on a couple of things that are not coming automatically. But I can't ask for more," Nadal said. "(It was) another great evening for me against another good opponent. Can't complain at all. Much better (than) what I expected."

 

Lorenzo Musetti, 18, who had upset three-time Grand Slam champion Stan Wawrinka and Japan's top player Kei Nishikori in the tournament's opening two rounds, lost to Dominik Koepfer of Germany 6-4, 6-0.

 

Fourth-seeded Matteo Berrettini defeated Stefano Travaglia 7-6 (5), 7-6 (1) in an all-Italian contest to reach the last eight.

 

In the women's draw, top-seed Simona Halep beat Ukraine's Dayana Yastremska 7-5, 6-4. Second seed Karolina Pliskova registered a 6-4, 6-3 win over Russia's Anna Blinkova.