Defending champion Alcaraz reaches Wimbledon quarters

LONDON, July 7 (Xinhua) -- Defending champion Carlos Alcaraz held off a late challenge from Frenchman Ugo Humbert to reach the men's singles quarterfinals at the Wimbledon Championships here on Sunday.

Alcaraz, 21, took the opening two sets 6-3, 6-4 in style, but struggled in the third set as he was broken three times by a fighting opponent, losing 6-1.

In the fourth set, both Alcaraz and the 26-year-old