Thirteen-time French Open champion Spaniard Rafael Nadal kept 19-year-old Jannik Sinner's title aspirations in check by defeating the world No.19 Italian 7-5, 6-3, 6-0 to book a spot in the quarter-finals in Paris on Monday.

Nadal, the four-time defending champion, will now clash with 10th seed Argentinian Diego Schwartzman, who hit sublime form as he overcame Germany's world No.42 Jan-Lennard Struff 7-6(9), 6-4, 7-5 to make the last-eight grade here for the third time.