World number one Novak Djokovic and U.S. Open champion Dominic Thiem crashed out of the Vienna Open in the quarter-finals on Friday. Both top seeds were beaten in straight sets by Lorenzo Sonego and Andrey Rublev respectively. Djokovic, who had a 39-2 record this year, failed to convert a single break-point in a 6-2 6-1 Read More…