A mis-timing serve cost third seed Jelena Jankovic a place in the Wimbledon quarter-finals on Tuesday, when Marion Bartoli of France [Images] beat her 3-6, 7-5, 6-3 in a match that was interrupted by rain four times.

The 22-year-old Serb, one of the most consistent players this year, had trouble holding serve throughout the stop-start match and also seemed to struggle at the net.

Jankovic broke four times in the first set but dropped serve twice and her service game problems continued into the second when the French 18th seed broke in the third, fifth and seventh.

Bartoli served for the second set three times, eventually getting the better of her opponent with a crosscourt backhand that Jankovic could only hit into the net.

The Frenchwoman's groundstrokes seemed to gain power in the third set, while Jankovic missed some easy smashes and lacked conviction at the net.

The upset was finally complete when Jankovic was at the net and sent a forehand wide.

Bartoli's next opponent will be Michaella Krajicek of the Netherlands, who is seeded 31.

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