Wawrinka beats Berdych at ATP World Finals

Stanislas Wawrinka claimed a three-set victory over Tomas Berdych in the opening game of the ATP World Tour Finals at the O2 Arena in London. Impressive serving helped the Swiss take the first set, but a resurgent Berdych capitalised on Wawrinka's errors in the second-set tie-break. However, Wawrinka turned on the style in the decider for a 6-3 6-7 (7-0) 6-3 victory in two hours and 25 minutes.