Sania Mirza and her Russian partner Elena Vesnina have entered the third round of the women's doubles in French Open Tennis championships. In their second round in Paris on Friday, the pair defeated the combination of Kristina Barrois of Germany and Johanna Larsson of Sweden in straight sets 7-6, 6-3. In the women's singles, defending champion Francesca Schiavone reached the fourth round after her third round opponent Peng Shuai withdrew during the second set with health problems.The Italian was leading 6-3, 1-2 when China's Peng decided to pull out having been twice checked over by a doctor on court.