ATP Qatar Open results

Following are the results from the fourth day of the ATP Qatar Open at Doha on Thursday (prefixed number denotes seeding):

Quarter-finals

7-Ivo Karlovic, Croatia, bt 1-Novak Djokovic, Serbia, 6-7 (2/7), 7-6 (8/6), 6-4

4-David Ferrer, Spain, bt Dustin Brown, Germany, 6-2, 6-2

3-Tomas Berdych, Czech Republic, bt 6-Richard Gasquet, France, 6-2, 6-1

Andreas Seppi, Italy, bt Ivan Dodig, Croatia, 7-5, 6-4

Endi