Australia's Samantha Stosur has won the Wimbledon mixed doubles title with American partner Bob Bryan.

The pair upset top-seeded duo Katarina Srebotnik of Slovenia and Bryan's twin brother, Mike, 7-5 6-4 in one hour and one minute.

After several rain interruptions to the men's singles final between winner Rafael Nadal and Roger Federer, the doubles match was switched from Centre Court to Court No.1 and did not start until 8.32pm (local time).

With Bob Bryan and Stosur one set up and leading 3-1 in the second, there were discussions about whether to suspend the match because of bad light but the players decided to continue.

With Bob Bryan serving for the championship, the Australian-American pairing clinched victory in near darkness on the first of three match points when Mike Bryan hit a return into the net.