Prickly Novak Djokovic thrashes Goffin, picks row with umpireREUTERS Novak Djokovic gestures to the match referee after he was given a time violation warning. Defending champion Novak Djokovic trounced stand-in David Goffin 6-1 6-2 for a clean sweep of his group at the ATP World Tour Finals on Thursday (Friday NZ time) but still looked far from happy as he picked a row with the chair umpire. Clive Brunskill LONDON, ENGLAND - NOVEMBER 17: Novak Djokovic of Serbia plays a backhand in his men's singles match against David Goffin of Belgium on day five of the ATP World Tour Finals at O2 Arena on November 17, 2016 in London, England. Djokovic will face the runner-up of the John McEnroe group in the semifinals, be it Murray, Kei Nishikori or Stan Wawrinka. Later on Thursday (Friday NZT) Canada's Raonic and Austrian Thiem face off with the winner joining Djokovic in the semis.

Source: Stuff November 17, 2016 20:29 UTC