World number one Novak Djokovic advanced to the quarter finals of the ATP and WTA Miami Open by defeating Austrian 14th seed Dominic Thiem 6-3, 6-4. Two-time defending champion Djokovic, a five-time Miami winner overall, reached a last-eight date against Czech seventh seed Tomas Berdych, who outlasted French 10th seed Richard Gasquet 6-4, 3-6, 7-5. Berdych has won only two of 24 meetings with Djokovic, having lost their past nine matches since a 2013 Rome quarter-final victory. Djokovic, also a champion at Indian Wells and Doha this year.