Pakistan, July 9 -- Jannik Sinner advanced to the Wimbledon quarterfinals despite hurting his right elbow in a fall and dropping the first two sets Monday night, because his opponent, Grigor Dimitrov, had to quit with an injured pectoral muscle. The No. 1-seeded Sinner hadn't dropped a set in the tournament until falling behind No. 19 Dimitrov 6-3, 7-5. But at 2-all in the third set, Dimitrov stopped playing.

It's the fifth consecutive Grand Slam tournament where the 34-year-old Dimitrov failed to complete a match. He also did it at the Australian Open in January and the French Open in May, plus last year's Wimbledon and US Open.

"He's been so unlucky in the past couple of years. An incredible player. A good friend of mine, also. We und...