Roger Federer (No. 3, Switzerland) defeated Jo-Wilfried Tsonga (No. 6, France) in 3 sets at the season-ending Barclays ATP World Tour Final today in a brilliant display of determined and skillful tennis, 6-3, 6-7 (6), 6-3.It was Federer's 6th year-end World Tour title - an historic record which surpasses Ivan Lendl and Pete Sampras. It was also Federer's 70th career singles title, and 100th tour-level final performance.This year, Federer also won the ATP Stefan Edberg Sportsmanship Award (by peer vote) for the 7th time, and the ATP Fans Favorite Choice Award for the 9th straight time. He finishes the year as No. 3 in the world, behind only Novak Djokovic and Rafael Nadal."I know that it's one of my greatest accomplishments," said Federer. "I couldn't be more happy, I couldn't be more exhausted. This definitely is an amazing finish again to the season. I've never finished so strong." The Barclays ATP World Tour finals is limited to the top 8 ranked players in the world, who play in a round-robin format against each other for the season-ending Masters title. It is widely considered the most prestigious and certainly the most lucrative championship, after the four Grand Slam events.Federer added to his record 16 Grand Slam Singles Championships, and his Gold Medal in Doubles at the 2008 Olympics. Federer's accomplishments probably allow him to make the strongest claim of any player in history to the mythic mantle: "Greatest Player of All Time".Most tennis observers and experts agree that Federer's classic all-court tennis is not only exceptionally masterful, but also just beautiful to watch.Congrats Roger. Thank you for your extraordinary and inspiring tennis and well done.