Jannik Sinner is through to the Wimbledon quarterfinals, though not in the way he wanted. Sinner lost the first two sets of his fourth-round match with Grigor Dimitrov on Monday before Dimitrov was forced to retire from the match after suffering an apparent pectoral injury.

After winning the first two sets and having Sinner in serious upset danger, Grigor Dimitrov had to retire due to injury in the third set. The 34-year-old from Bulgaria had battled injuries for much of his career, and he knew something was wrong with his pectoral muscle after a serve.

THE ALL ENGLAND CLUB, LONDON — World No. 1 Jannik Sinner was on the precipice of a fourth-round exit from Wimbledon when he ended up on the receiving end of the absolute worst kind of good luck in sports.