American Venus Williams beat Serbian Jelena Jankovic 5-7, 6-3 and 6-4 to enter the final of the season-ending WTA Championship here on Saturday. With her sister Serena advancing earlier, it will be their 23rd meeting in the women's tennis.

Serena Williams of the United States of America hits a return to Caroline Wozniacki of Denmark during their semi-final match at the WTA Tour Championships in Doha, Qatar, Oct. 31, 2009. S. Williams won to the final, when Wozniacki retired midway through the match.

Serena, who will end the year as world number one for the first time since 2002, got past Caroline Wozniacki after the Dane pulled out with a stomach injury when trailing 6-4, 0-1. The Williams sisters have already met in the Qatari capital this week, Serena winning a three-set scrap in their Maroon Group clash which was their 22nd career duel.

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