![07.11.2013 London, England. Novak Djokovic [SRB] in action against Juan Martin Del Potro [ARG] on day 4 of The ATP World Tour Finals 2013, Tennis Tournament at the O2 Arena London. Novak Djokovic [SRB] won the match 6-3, 3-6, 6-3.](https://m.psecn.photoshelter.com/img-get/I0000XI9J11O243Q/s/500/AP-11468418.jpg)

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07.11.2013 London, England. Novak Djokovic [SRB] in action against Juan Martin Del Potro [ARG] on day 4 of The ATP World Tour Finals 2013, Tennis Tournament at the O2 Arena London. Novak Djokovic [SRB] won the match 6-3, 3-6, 6-3.Release:
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