Roger Federer of Switzerland (L) and Ra [Getty Images]

Roger Federer of Switzerland (L) and Rafael Nadal of Spain pose for pictures in London, on November 20, 2009. The two players will take part in the ATP World Tour Finals which begin in London on Sunday November 22, 2009. AFP PHOTO/Carl de Souza (Photo credit should read CARL DE SOUZA/AFP via Getty Images)

AFP CARL DE SOUZA