Tennis star Grigor Dimitrov penned an emotional message to his fans after his Wimbledon withdrawal this week ... saying his abrupt exit was "one of the most painful moments of my career."
The 34-year-old Bulgarian was well on his way to upsetting the No.1-ranked Jannik Sinner in the round of 16 on Monday ... but when he was up two sets, he was forced to retire from the match due to a pec injury.
Dimitrov went to social media on Friday to address his followers .