WTA Championship

Belgium's Kim Clijsters holds the trophy after she defeating Denmark's Caroline Wozniack during the final match of Qatar WTA Tennis Championship in Doha, Qatar on October 31, 2010. (AP)

L-R) Runners up Kveta Peschke of the Czech Republic and Katarina Srebotnik of Slovenia pose with winners Gisela Dulko of Argentina, Flavia Pennetta of Italy after the doubles final at the WTA Championships in Doha on October 31, 2010. (REUTERS)

Doubles partners Flavia Pennetta (L) of Italy and Gisela Dulko of Argentina pose with their trophies after winning the doubles final at the WTA Championships in Doha on October 31, 2010. (REUTERS)

Belgium's Kim Clijsters (C)poses with Sheikha Alayassa Bint Hamad bin Khalifa Al Thani, daughter of Emir of Qatar (L) and Nase Al Khulaifi, President of Qatar Tennis Federation after she beat Denmark's Caroline Wozniack in the final match of the Qatar WTA Tennis Championship in Doha, Qatar on October 31, 2010. (AP)

Belgium's Kim Clijsters (2nd L) receives a check from Nase Al Khulaifi, President of Qatar Tennis Federation after she beat Denmark's Caroline Wozniack in the final match of the Qatar WTA Tennis Championship in Doha, Qatar on October 31, 2010. (AP)

Caroline Wozniacki of Denmark plays against Kim Clijsters of Belgium during the WTA Championships final tennis match at the Khalifa International Tennis Complex in Doha on October 31, 2010. (AFP)

Kim Clijsters of Belgium plays against Caroline Wozniacki of Denmark during the WTA Championships final tennis match at the Khalifa International Tennis Complex in Doha on October 31, 2010. (AFP)

Caroline Wozniacki of Denmark (R) congratulates Kim Clijsters of Belgium after she won the WTA Championships final tennis match at the Khalifa International Tennis Complex in Doha on October 31, 2010. (AFP)