A virtuoso performance from Roger Federer saw him progress to the semi-finals of the ATP World Tour Finals after a 6-3 6-0 win over great rival Rafael Nadal. The reigning champion controlled the first set before raising his

game further in the second to breeze past Nadal in just over an hour at the O2 Arena in London. The victory, which included an array of brilliant winners, means world number four Federer cannot fall out of the top two places in Group B. Second seed Nadal, meanwhile, can still progress to the last four if he wins his final match of the round-robin stage against Jo-Wilfried Tsonga. "It's a very surprising result, I guess we can't always live up to our expectations and I've definitely seen Rafa play better, but I've also definitely played worse," Federer told Sky Sports after the match.Read Full; Optimum Sports Marketing: Federer Brilliance Stuns Nadal:

