CHARLESTON (Agencies) - Sania Mirza and her Russian partner Elena Vesnina clinched their second WTA title together, lifting the Family Circle Cup doubles trophy with a straight-set triumph over Americans Bethanie Mattek-Sands and Meghann Shaughnessy. The unseeded Indo-Russian pair beat the fourth seeds 6-4, 6-4 in what was a repeat of the Indian Wells final three weeks ago in which Sania and Vesnina had come out victorious. Sania and Vesnina held off late surges from the Americans, managing to grab the first set after letting a 5-1 lead close to 5-4. The second set followed a similar script as Sania and Vesnina let a 4-0 lead close to 4-4. But Vesnina fired a forehand winner to seal it for the pair. This was Sania and Vesninas fifth event together. They began with back-to-back quarterfinals at Dubai and Doha before winning the Indian Wells but fell early in Miami. In Charleston, Sania won her 11th WTA doubles title, while Vesnina lifted her fifth. It helps we get along so well. If either one of us isnt playing well, you dont get angry at your friends. Weve known each other for really long. We play better every day and understand each others games better. When the other one isnt playing as well, the other picks it up, Sania said.