Roger Federer of Switzerland poses with the No.1 trophy at the ATP World Tour Finals tennis tournament in London, Nov. 25, 2009. He clinched the 2009 ATP World Tour year-end No.1 for the fifth time after he defeated Andy Murray of Britain at the ATP World Tour Finals Tuesday night. [Xinhua/Tang Shi]

Switzerland's world number one Roger Federer was named 2009 ITF World Champions on Tuesday. It was the fifth time Federer won the ITF award.

The award is based on performances at grand slam events, Tour events, Davis Cup and Fed Cup.

"It is an honour for me to be named ITF World Champion for a fifth time," Federer said in an ITF statement. "It was an incredible year for me both on and off the court.

Serena Williams also took the award but for the second time

Serena and sister Venus were named women's doubles World Champions for the first time with Bob and Mike Bryan taking the men's doubles honour for a record sixth time.