The Serena Williams-Andy Murray mixed-doubles partnership at Wimbledon is a match made in tennis heaven.<br /><br />Williams is the most successful player in the open era of professional tennis, with 23 grand slams in singles.<br /><br />Murray is Britain's most successful player in the same period, with three.<br /><br />According to CNN, Williams has also won 14 Grand Slam doubles titles with big sister Venus. <br />
