In French Open Tennis, India's Sania Mirza and her American partner Bethanie Mattek-Sands will lock horns today with the Czech-Russian combination of Lucie Safarova and Anastasia Pavlyuchenkova for a place in the Women's Doubles quarterfinals. In the second round yesterday, the seventh seeded Indo-American pair defeated the American duo of Megan Moulton-Levy and Lauren Davis, 1-6, 6-3, 6-0 to advance to the pre-quarterfinals.In the Mixed Doubles,the Indo-Serbian team of Leander Paes and Jelena Jankovic will slug it out against the eighth seeded Brazilian-American team of Marcelo Melo and Liezel Huber in the pre-quarterfinals.In the two Women's Singles quarterfinal matches today, World Number One Serena Williams of the United States will take on Russian Svetlana Kuznetsova, while Agnieszka Radwanska of Poland will meet Italian Sara Errani.In the two Men's Singles last-eight fixtures scheduled for today, Swiss World Number Two Roger Federer will clash with Frenchman Jo-Wilfried Tsonga, while Spaniard David Ferrer will face compatriot Tommy Robredo.