By Piers Newbery
BBC Sport at Wimbledon
Amelie Mauresmo's reign as champion came to an end at a damp Wimbledon on Tuesday as she lost 7-6 (8-6) 4-6 6-1 to Nicole Vaidisova in round four.
Vaidisova has now won three in a row against Mauresmo
A half-empty Centre Court endured three rain breaks, and it was almost four hours after the 1100 BST start when Vaidisova secured a last-eight place.
Vaidisova, 18, fought back from 5-3 down in the first set, saving two set points before edging the tie-break.
Mauresmo got the only break in set two but Vaidisova dominated the decider.
"It was a great win today," said the Czech teenager.
"I feel really good about my game. I'm not a huge fan of grass and it's always a huge challenge for me but it's fun to challenge yourself every now and again.
I just want to find the form I had quickly
"I feel like I'm improving every match which is good. I haven't even asked myself if I can win the title. I'm just taking it match by match."
Mauresmo admitted her serve had not been up to scratch.
"I didn't serve well," said the Frenchwoman, who served 14 double faults on Tuesday.
"I made a lot of double faults throughout my first three matches, and obviously in a longer match you'll have even more. It was definitely not good."
She added: "I just want to find the form I had quickly. I'm trying but it's a struggle for right now."
The weather dictated that it would never be a classic match but even so, the opening stages were scrappy with the pair sharing six breaks of serve in a rain-interrupted first set.
Mauresmo looked to have taken control in the tie-break but could not convert two opportunities and Vaidisova made her pay.
Fourth seed Mauresmo got back on track with the solitary break in game five of the second set, returning after a third rain break to serve out and level the score.
But that was as good as it got for Mauresmo, and even the looming black clouds did not arrive in time to save her as Vaidisova raced through the final set.
Two breaks put the Czech 14th seed in total control and a disgusted Mauresmo smashed a ball out of the stadium in anger in the final game as she saw her title slip away.
Vaidisova will play Ana Ivanovic in the quarter-finals after the Serbian sixth seed beat Nadia Petrova 6-1 2-6 6-4.