LONDON: Rafael Nadal reached the Wimbledon quarter-finals for the eighth time on Monday with a straight-sets defeat of Botic van de Zandschulp. Nadal, who has already won the Australian and French Opens to stand halfway to the first calendar Grand Slam since 1969, triumphed 6-4, 6-2, 7-6 (8/6). Next up for the 36-year-old Spaniard is a clash against American 11th seed Taylor Fritz, who beat him in the Indian Wells final earlier in the year. Nadal had already defeated Van de Zandschulp in straight sets at the French Open and he was hardly troubled Monday until a third set blip. He broke the world number 25 Dutchman in the 10th game to secure the opening set. The 22-time major winner backed it up with a double break in the second set. Van de Zandschulp managed to stem the bleeding, retrieving a break in the third to get to a tiebreak. He saved three match points before his challenge ended with a wild smash.