(LONDON) -- Novak Djokovic topped Roger Federer 7-6 (6), 7-5 Monday in the championship match at the ATP finals in London.
Djokovic trailed Federer 2-0 early, but rebounded nicely before winning on a backhand serve in the tenth game.
"Maybe a bit of regret because I had the lead twice first before him," said Federer, the two-time defending champion. "At the end of the day, that doesn't matter. You have to get over the finish line in the set and then obviously at the match. He was better at that today."
"Obviously I was going to try to go after my shots and not just hand it to him. That's just how I play tennis," Federer said. "If I have 80 errors and I win the match, I don't care. I really don't."
It was Djokovic's second victory at the year-end tournament for the top eight players in the world, if Djokovic had lost, he still would have maintained his world No. 1 ranking.
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