US Open: Novak Djokovic disqualified after hitting lineswoman; apologises on Twitter

World No.1 Novak Djokovic exited the US Open in the most unexpected fashion after he was defaulted as a ball he struck had hit the line judge in the throat. While the shot wasn't intentional, the official was down for a while. The Serb was in action against Pablo Carreno Busta.

While Djokovic didn't attend the post-match...