LONDON, England - Andrea Hlavackova and Lucie Hradecka moved to within one win of Olympic gold on Friday when they knocked out top seeds Liezel Huber and Lisa Raymond.

The 61 76(2) victory sees Hlavackova and Hradecka advance to their second Centre Court final of the summer, having also finished as runners-up at Wimbledon four weeks ago.

After rattling through the opening set, the Czechs were made to work much harder in the second as Huber and Raymond began to draw out the points and work their way back into the match.

However, despite recovering from a break down to force a tie-break, there was to be no great escape, Hlavackova threading a winning return down the line on their first match point.

"It is amazing, we started so well, but then they started to play more aggressive and showed they were not going to let it go without fighting," Hlavackova said. "Luckily, Lucie kept my spirits up and served really well to get us through the tie-break.

"We have the day off tomorrow so I think we want to enjoy this moment for now and on Sunday we are just going to go for it."

Facing them in the final will be either their Wimbledon conquerors Serena and Venus Williams or the Russian pair of Maria Kirilenko and Nadia Petrova, who clash in the second semifinal on Saturday.

Meanwhile, in the mixed doubles, Raymond bounced back from her earlier disappointment by teaming up with Mike Bryan to defeat Gisela Dulko and Juan Martín del Potro, 62 75, in the quarterfinals.

On a day when marathon matches and deteriorating light played havoc with the schedule, the only other completed match saw Sabine Lisicki and Christopher Kas edge past Roberta Vinci and Daniele Bracciali, 46 76(2) 107.