Djokovic with the ATP Tour Finals trophy

Novak Djokovic hailed his historic fourth successive ATP Tour Finals title as a dream come true after the world number one finished his astonishing campaign by routing Roger Federer in Sunday’s final.

After hoisting the trophy, the 28-year-old Serb admitted he sometimes has to pinch himself to realise he is actually winning the tournaments he dreamed of playing in as a child.

“I am enjoying every moment on the court. I cherish every moment after dreaming of it as a kid,” Djokovic said.

“Obviously I’m very proud, together with my team, for the achievements of the season.

“It could not have been a better finish. It’s been a long season, but the best of my life.”

That straight sets defeat ended Djokovic’s 23-match winning run and he revealed he decided to change his game-plan against the Swiss great to avoid a repeat in the final.

“He was the better player in the match he won against me in the group stage. I had to change something,” said Djokovic who ends 2015 with an 82-6 record.

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Federer had few complaints about missing out on his seventh Tour Finals title and the 17-time Grand Slam champion saluted Djokovic’s remarkable 2015 run.

The 34-year-old, who pulled out of last year’s final against Djokovic with a back injury, said: “It is never fun on the not winning side, it is better than not playing at all like last year.

“This week was great, there were some crazy points tonight, but like plenty of times this year Novak deserved it.

“Well done on a crazy good year.”

*Reported by AFP