Serbian Novak Djokovic celebrates after defeating Austria’s Dominic Thiem in their singles group match at the ATP World Tour Finals in London. Photo: EPA

Gritty Novak Djokovic avoids Dominic Thiem upset at Tour Finals in London

Former world number one survives a scare at the start of his bid to regain the top spot as he battles back for a three-set victory over Austrian

Topic |   ATP World Tour Finals 2016

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Serbian Novak Djokovic celebrates after defeating Austria’s Dominic Thiem in their singles group match at the ATP World Tour Finals in London. Photo: EPA
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