www.bbc.co.uk/sport/tennis/59881229
'Novak Djokovic often has to cup his ear to encourage a crowd to cheer for him.
He has won a record-equalling 20 men's Grand Slam titles and is a world number one with jaw-dropping athleticism - but he is also one of his sport's most polarising figures.'
Big prize for first to spot the massive, gobsmacking, factor, demonstrated more than once!
There are two incidents I can think of which led to loads of media coverage, and which attracted negative comment from tennis stars around the world...