Novak Djokovic claims first-set tie-break after Wawrinka fightback

Djokovic, who became the third man to hold all four grand slam singles titles at once after his triumph at Roland Garros in June, came into the final with a 19-4 career head-to-head advantage over the Swiss third seed.

And the defending champion secured an early break before holding to love to open a 3-0 advantage.

The Swiss star rallied to get on the scoreboard, but struggled to put any pressure on the Djokovic serve right up until the Serb attempted to serve it out at 5-3.

Then, however, the momentum, shifted: Wawrinka pounced to earn his first break opportunity, and a double-fault from the world number one put the first set back on serve.

Djokovic regained his focus, taking the tie-break with ease - but a match which seemed it might be a walkover after the opening 20 minutes now looks like developing into an epic.

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