After asking the umpire "what he was going to do about it", the hecklers were eventually removed and Djokovic #regained his focus, knocking #Couacaud out with a bagel he did not deserve

Djokovic cruised through the rest of the opener but twinges in his hamstring - which was already bothering him before the start of the #tournament - slowed him down and allowed #Couacaud into the contest.

Djokovic entered the Rod Laver Arena with his left thigh #heavily taped but it was his opponent #Couacaud who struggled with injury early on

The 35-year-old Serb, going for a record-extending 10th men's triumph in #Melbourne, won 6-1 6-7 (5-7) 6-2 6-0 against French qualifier Enzo #Couacaud