India, July 8 -- World No. 19 Bulgarian star Grigor Dimitrov retired hurt from her match against World No. 1 Jannik Sinner at the Round of 16 match-up at Wimbledon's center court on Monday. As per reports, Dimitrov retired with a muscle injury. Despite being two sets down, Italian star Sinner will now progress to the quarter-final of the Wimbledon championship.

Dimitrov, two sets up against Sinner, was on his way to producing one of the biggest upsets of the tournament by knocking out the World No. 1. However, the Bulgarian's dream run at the center court came to a halt as he clutched his right chest after hitting an ace when the scores were level at 2-2 in the third set, and started shouting, "My pec! My pec!" - referring to his pectora...