Mark Knight cartoon - Djokovic verus Dan Andrews

One man stands between tennis superstar Novak Djokovic and his bid to win a record number of Grand Slams with victory at the Australian Open, according to cartoonist Mark Knight.

<p>One man stands between tennis superstar Novak Djokovic and his bid to win a record number of Grand Slams with victory at the Australian Open, according to cartoonist Mark Knight.</p>

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