Roger Federer celebrates after winning a point over Rafael Nadal during their semifinal match at the BNP Paribas Open, Saturday, March 17, 2012, in Indian Wells, Calif. Federer won 6-3, 6-4. (AP Photo/Mark J. Terrill)

Photo by: Mark J. Terrill

Roger Federer celebrates after winning a point over Rafael Nadal during their semifinal match at the BNP Paribas Open, Saturday, March 17, 2012, in Indian Wells, Calif. Federer won 6-3, 6-4. (AP Photo/Mark J. Terrill)