Andre Agassi of the US and Germany's Steffi Graf react during their mixed doubles match against Tim Henman...
Andre Agassi of the U.S. and Germany's Steffi Graf react during their mixed doubles match against Tim Henman and Kim Clijsters under the newly completed Centre Court roof at Wimbledon in London May 17, 2009. REUTERS/Kieran Doherty (BRITAIN SPORT TENNIS)