The unseeded slayers of the top seeds in the semi-finals, pipped the American-Taipei combination 4-6, 6-0, 11-9 in one hour and 25 minutes.
After losing the opening set, Sania and Cara made a stunning recovery as they bageled their opponents with three breaks to push the match to super tiebreaker, where the Indian-Zimbabwean combo rallied again to edge past the rivals 11-9 win.
Ecstatic after the win, Sania tweeted, "#champions #yesss #wedidit #comeonnnnnn".
Sania has been struggling to find consistent partners this season and this title was her fourth with third different partner.
She won Brisbane and Dubai events with American Bethanie Mattek Sands and the New Haven title came with Chinese Jie Zheng.
Image: Sania Mirz and Cara Black
Photograph: Koji Watanabe/Getty Images
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