London, England, 4 August 2012 | Tennis Australia

After the Roger Federer-Juan Martin del Potro Olympic semifinal wreaked havoc with the Day 7 schedule at Wimbledon, Sam Stosur and Lleyton Hewitt’s mixed double quarterfinal will now open the Day 8 program on Centre Court.

Federer’s 19-17 victory in the third set against del Potro – a match that took almost four-and-a-half hours to complete – meant that Andy Murray’s semifinal against Novak Djokovic later on Centre Court did not finish until after 8.30pm London time.

With the light rapidly fading it was impossible for him to partake in his scheduled mixed doubles quarterfinal against the illustrious Aussie duo alongside partner Laura Robson.

Stosur and Hewitt will now battle Robson and Murray in the first match of the day on Centre Court on Saturday, scheduled for 9pm AEST.