No tennis player has ever won the prestigious ATP World Tour Finals six times, but Roger Federer got his chance on Sunday. He met Jo-Wilfried Tsonga in the tournament final, aiming to set the record at the O2 Arena.

Roger Federer of Switzerland kisses the trophy after winning his final match against Jo-Wilfried Tsonga of France, in 2011's ATP World Tour Finals, in London, Britain, Nov. 27, 2011. Federer won 2-1 to claim the tital for the sixth time. [Xinhua]

In the first set, Tsonga serving, but Federer scrambles to slap a backhand winner down the line. He left Tsonga stranded at the net to reach a crucial break point. Then, Federer grabbed the first set 6-3. Tsonga lunged at a backhand that slammed into the net. The Swiss champion was halfway to the title.

Federer grabbed an early break in the second set and looked ready to take his 70th tour title, when he served for the match at 5-4. But Tsonga had the answer and leveled the set at 5-games all. Tsonga went on to win a tiebreaker that settled the second set in his favor, and sent the match to a decider. The third set was a close one, but Federer was the best under pressure. He gained a big service break after a Tsonga forehand went wide - Federer up 5-3 in the third.

Tsonga failed to return an overhead forehand smash in the next game and that ended the match. Federer won it, 6-3, 6-7, 6-3 in two hours 18 minutes. It was another record-breaking day for the 16-time grand slam champion. Federer gained the distinction of being the oldest player to win the season-ender since Ilie Nastase in 1975.

Federer said, "Well, it feels very special, indeed. I mean, you know, I've been trying to sort of block it out for the entire tournament, the entire time I've been here in London. I just tried to recuperate from Basel and Paris and hopefully get through the round robin stages. So now it's finally sort of reality that I've been able to win six World Tour Finals. It's an amazing feeling. I know it's one of my greatest accomplishments."