Actor Will Ferrell hits forehands as Andy Roddick (L) of the US, Maria Sharapova (2nd L) of Russia, Serena Williams (2nd R) of the US and Roger Federer of Switzerland look on during the Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center in Flushing, New York August 29, 2009. The 2009 US Open will begin on August 31. Getty Images logo Getty Images 30 months ago

Actor Will Ferrell hits forehands as Andy Roddick (L) of the US, Maria Sharapova (2nd L) of Russia, Serena Williams (2nd R) of the US and Roger Federer of Switzerland look on during the Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center in Flushing, New York August 29, 2009. The 2009 US Open will begin on August 31.