Novak Djokovic swept into the French Open quarter-finals for the 14th straight year on Sunday as world number one Carlos Alcaraz prepared for a tricky test against Italy's Lorenzo Musetti. Third seed Djokovic, who is chasing a record 23rd men's Grand Slam singles title at Roland Garros, ended the surprise run of Peruvian outsider Juan Pablo Varillas in straight sets. Djokovic, a two-time champion in Paris, won 6-3, 6-2, 6-2 against the 94th-ranked Varillas to book a meeting with Russia's Karen Khachanov, the 11th seed who overcame Lorenzo Sonego in four sets. "I had never played my opponent before. I knew he was a clay court specialist and that I had to earn the victory. It was the best I played this week," said Djokovic.