Djokovic apologises for hitting lineswoman with ball, reveals she's fine

World number one Novak Djokovic took to Instagram to apologise after getting disqualified from US Open for hitting a lineswoman in the throat with a ball. The 33-year-old wrote, "This whole situation has left me really sad and empty. I checked on the lines person and...thank God she is feeling ok. I‘m extremely sorry to have caused her such stress."