On Friday, Djokovic outclassed compatriot Miomir Kecmanovic, 6-1, 6-3, in 75 minutes to book his Belgrade semifinal spot. The world No. 1 took eight of the first nine games and did not get broken until his final service game of the match, when he held a double-break advantage.
Djokovic won 63 percent of his first-serve return points to continually pressure the 21-year-old. He wrapped up the victory in trademark fashion by quickly shifting from defense to offense, closing with a volley into the open court.
The Serbian will next face Aslan Karatsev, whom he knocked out in the Australian Open semifinals. The third seed defeated Italy's Gianluca Mager, 6-3, 6-4. Second seed Matteo Berrettini won the first match of the day, eliminating fifth-seeded home favorite Filip Krajinovic, 6-4, 6-4.
Over in Barcelona, third-ranked Nadal should be more satisfied with his quarterfinal result. After needing to win a pair of three-setters coming into his encounter with Cam Norrie, the 11-time event champion posted a 6-1, 6-4 victory—though was spotted back on the practice courts afterwards.
Up 4-3 in the second set, Nadal let Norrie back into the contest—briefly—when his forehand unforced error saw the Brit get back on serve. The lefty recovered immediately with a break at love when Norrie returned the favor with a long forehand. Nadal will carry a 7-0 mark against sixth-seeded countryman Pablo Carreno Busta, a 6-3, 4-6, 7-5 winner over No. 4 seed Diego Schwartzman.
Tsitsipas defeated No. 10 seed Felix Auger-Aliassime, 6-3, 6-3, in the pair’s first clay-court meeting. The 11th-seeded Sinner denied Andrey Rublev a shot at possible Monte Carlo final redemption against Tsitsipas when he took down the No. 3 seed, 6-2, 7-6 (6).