Justine Henin's 17-match unbeaten run at the Dubai Championships came to an end when she was beaten in the quarter-finals by Italian Francesca Schiavone.
The world number one had won the title on her last four visits to Dubai but put in an erratic display as she lost 7-6 (7-3) 7-6 (7-4).
Third seed Ana Ivanovic also went out, beaten 5-7 6-3 6-3 by Elena Dementieva.
Russian Dementieva recorded her third straight win over the Australian Open finalist to book a meeting with Schiavone.
Schiavone looked to have missed her chance when she twice failed to serve out the match in the second set - wasting a match point at 5-4.
But Henin was unable to take advantage, playing a poor tiebreak which Schiavone won 7-4.