Top seed Lindsay Davenport remained on course for her second Wimbledon title with a hard-fought quarter-final victory over Russia's Svetlana Kuznetsova.
Davenport was twice a break up against the reigning US Open champion in the opening set but needed a tie-break to finally win it 7-1 on Court One.
The 1999 champion then raced into a 3-0 lead in the second set but was made to fight all the way before securing a 7-6, 6-3 victory with her eighth ace of the match.
The American will now face third seed Amelie Mauresmo in tomorrow's semi- finals after the Frenchwoman defeated Russian Anastasia Myskina in straight sets.
"I was up a break two different times in the first set but managed to play a good tie-break and played a good second set," said Davenport, whose victory over Kim Clijsters in the previous round ensured she would remain world No 1 after the Championships.
"It seemed like every time I had break point in the second set she aced me so I was really glad I was able to come back after yesterday, which was a tough match physically and mentally."
Looking forward to the semi-final with Mauresmo, Davenport said: " I've never played her on grass before but it seems like she's playing great.
"She's a great athlete, comes in a lot and I admire her a lot. I'm going to have to play my best against her."