In a video of the moment, it looked as though the 34-year-old Dimitrov injured a pectoral muscle on a volley. Almost immediately after the hit, he fell to the ground, clutching the right side of his chest in pain.

Grigor Dimitrov's rotten luck at Majors continues. The Bulgarian has retired at his five most recent notable events, with his body cracking down and leaving the Bulgarian heartbroken. A day after his emotional Wimbledon fourth-round retirement against world no.