Russian player Nikolay Davydenko defeated Juan Martin del Potro 6-3, 6-4 to clinched the title of ATP World Tour Finals at 02 Arena on Sunday.

Davydenko, beating World No. 1 Roger Federer in Saturday's semifinals, made stride to become the first Russian to win the year-end title in the tournament history.

Nikolay Davydenko of Russia kisses his trophy after defeating Juan Martin Del Potro of Argentina in the final of the ATP World Tour Finals tennis match in London, November 29, 2009. [Xinhua/Reuters Photo]

"if you see like I was watching, till 2008, so many names there, like Djokovic, Federer, everyone, Sampras. In 2009, stay name Davydenko for, like, forever, for this trophy. I think it's amazing," said the 28-year-old World No. 7.

Davydenko, upsetting Federer for the first time in their all 13meetings, believed winning the trophy here was the sweetest for him.

?Juan Martin Del Potro of Argentina reacts after losing the final of the ATP World Tour Finals tennis match against Nikolay Davydenko of Russia in London, November 29, 2009. [Xinhua/Reuters Photo]

"Trophy, it's always something important, you know, in career for the tennis player. Something important for me because Federer I beat in semifinals. It was a great match, good feeling. Never beat him before. And beat him once here in semifinals. But, you know, final's different."

Davydenko finished second to Novak Djokovic of Serbia in last year's finale, but this time the Russian edged out the defending champion with a better sets record after beating World No. 9 Robin Soderling in the last Group match on Friday.