Djokovic to face Nadal in semifinal of ATP Tour Finals

Novak Djokovic has set up a semifinal clash against Rafael Nadal at the ATP Tour Finals in London. The world number one booked his last-four berth with a 6-3, 7-5 victory over Tomas Berdych in his final group match. Elsewhere, Roger Federer knocked Japanese star Kei Nishikori out of the tournament with a 7-5, 4-6, 6-4 win. Federer, who has won the Tour Finals a record six times, will face either Andy Murray or Stan Wawrinka in the semifinal on Saturday.