Roger Federer (R) of Switzerland and Pete Sampras of the U.S. celebrate after winning a point against Andre Agassi of the U.S. and Rafael Nadal of Spain during their doubles exhibition match for the Hit for Haiti fund raiser event at the Indian Wells WTA and ATP tennis tournament in Indian Wells, California, March 12, 2010. REUTERS/Danny Moloshok (UNITED STATES - Tags: SPORT TENNIS)