Wimbledon 2017: I quit! Both Federer and Djokovic benefit from opponents' retirements
Tennis | Jul 05, 2017, 12:02 PM ISTDjokovic led 6-3, 2-0 when Martin Klizan retired with a left leg problem during the first round encounter, whereas, Federer was ahead 6-3, 3-0 when Alexandr Dolgopolov quit because of a painful right ankle.