Novak Djokovic opened strong in Belgrade on Wednesday cruising past young Korean Soonwoo Kwon 6-1, 6-3.

“I thought I played very well from the very beginning, except that service game that I lost at 5-2 in the second. I thought it was a pretty flawless performance,” Djokovic said. “I moved well, I was mixing up the pace quite well, making him play. I served well in the important moments, overall I just felt great.”

That’s good news after a poor start to the clay in Monte Carlo last week where he lost to Dan Evans.

Djokovic is more than at home at the tournament where he played on a court with his name on it and where his brother is the tournament director. He’ll now face countryman and 21-year-old Miomir Kecmanovic on Friday in the quarterfinals.

In two all-countryman battles, Matteo Berrettini beat Marco Cecchinato and Filip Krajinovic topped Nikola Milojevic.

Tomorrow, Dusan Lajovic, Aslan Karatsev and Alexei Popyrin headline.