In Tennis, Sania Mirza and her Zimbabwean teammate Cara Black have stormed into the semi-finals of the WTA Finals Singapore. In the quarterfinals, the third seeded Indo-Zimbabwean pair defeated the American team of Abigail Spears and Raquel Kops-Jones, 6-3, 2-6, 12-10. For a place in the finals, Sania and Cara will take on the winner of today's quarterfinal match between top seeds Sara Errani and Roberta Vinci of Italy and Kveta Peschke and Katarina Srebotnik.Cara Black has won two WTA Finals doubles titles so far, while Sania is making her debut at the season finale.