Andy Murray kept alive his hopes of securing two medals after he and Laura Robson won a dramatic first-round mixed doubles clash.
The duo beat the Czech pair Radek Stepanek and Lucie Hradecka 7-5 6-7 (7/9) 10-7 on Court One.
Murray had earlier negotiated his passage to the semi-final of the men's singles where he will face former world number one Novak Djokovic.
The British pair have had success in mixed before, reaching the final of the Hopman Cup in Australia in 2010, but it was a rare outing in the format for the Scot. Robson, 18, was preferred to British number one Heather Watson to partner Murray and she initially looked a little nervous, mis-hitting a lot of shots in very windy conditions.
Stepanek and Hradecka are both talented doubles players - Hradecka is through to the women's doubles semi-finals here with Andrea Hlavackova - but they were not making any headway.
Robson in particular grew into the match and the British pair timed their break to perfection, Murray guiding a backhand half-volley down the line to make it 6-5 and his partner serving out the set to love.
Court One was again far from full but the fans that were inside roared their support, and things got even better when the British pair broke again at the start of the second set, Robson landing a stunning lob on the baseline.
Robson's serving had been excellent but when she wobbled in the eighth game it was costly, three double faults helping the Czechs break back for 4-4.
With a match tie-break instead of a third set, the home pair really wanted to wrap it up in two, but they missed a match point in the regulation tie-break and the Czechs levelled.
The deciding tie-break was the first to 10 points, and Murray and Robson looked on the way out when they trailed 5-2 but they mounted a spirited recovery, winning seven points in a row and then clinching victory when Murray powered away a volley. In the quarter-finals they will meet Australian duo Lleyton Hewitt and Sam Stosur.