Andy Murray and Laura Robson thrilled the Centre Court crowd at Wimbledon by reaching the Olympic mixed doubles semi-finals.
The British pair managed an unexpected victory over Australian opponents, holding their nerve to beat Lleyton Hewitt and Samantha Stosur 6-3 3-6 10-8.
Germany's Sabine Lisicki and Christopher Kas await in the last four, with the match scheduled to take place later this afternoon.
The British duo looked confident in the opening set but Hewitt and Stosur, both grand slam singles champions, showed their class to level the match.
The first point of the match tie-break had to be replayed as a ball girl mistakenly ran across the court when she wrongly thought the point had finished.
It looked as though victory might slip away from the British pair, with men's singles finalist Murray letting out a howl of frustration as he and Robson slipped 7-5 down in the tie-break. But they pulled it back to secure a place in the semi-finals where a win will mean a guaranteed medal.