World No 1 tennis player Novak Djokovic was degaulted from US Open after incidentally striking a line judge with a ball.

The Serbian champion had just been broken to trail 6-5 in the first set against Spain's Pablo Carreno Busta in New York when he hit a ball behind him. Djokovic wasn't aiming at anyone but the ball hit the line judge and she fell to the ground.

The chair umpire, Aurelie Tourte, and Djokovic, went to check on her before they were joined on court by tournament referee Soeren Friemel and supervisor Andreas Egli.
Djokovic then had an extended conversation with Friemel before being officially defaulted. He walked off court in near silence since no fans were in the stadium due to the coronavirus pandemic and left the tournament site without speaking to the media.

In an Instagram post later on Sunday, Djokovic apologized to the tournament and everyone associated for his behavior.
"This whole situation has left me really sad and empty," he wrote. "I checked on the lines person and the tournament told me that thank God she is feeling ok. I'm extremely sorry to have caused her such stress. So unintended. So wrong. I'm not disclosing her name to respect her privacy. As for the disqualification, I need to go back within and work on my disappointment and turn this all into a lesson for my growth and evolution as a player and human being."