ATP World Tour Finals - Wawrinka beats Berdych in opener

Watch highlights as Stanislas Wawrinka claims a three-set victory over Tomas Berdych in the opening match of the ATP World Tour Finals.

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 (0-7) 6-3 victory in two hours and 25 minutes at the O2 Arena in London.

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