Novak Djokovic has suffered a shock second round defeat at the Australian Open tennis.
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Novak Djokovic has suffered a shock second round defeat at the Australian Open tennis.
The reigning champion was beaten in five sets by Uzbekistan's world number 117 Denis Istomin, in a match which lasted just short of five hours.
It's the first time Djokovic has lost this early at a grand slam since Wimbledon 2008.
