Sania Mirza and Cara Black have entered the quarter-finals of the Women's Doubles in the French Open Tennis championships. In the pre-quarterfinals in Paris today, the fifth-seeded Indo-Zimbabwean pair prevailed over the duo of Jelena Jankovic of Serbia and Russian Alisa Kleybanova in straight sets 6-3, 6-3. In the Mixed Doubles quarter-finals today, India's Rohan Bopanna and his Slovakian partner Katarina Srebotinik will lock horns with eighth seeded team of Julia Georges from Germany and seasoned Nenad Zimonjic from Serbia.Yesterday, the Indo-Slovakian combination had to work hard to beat Cara Black and Robert Farah 6-3, 3-6, 10-7 in a second round contest.