The unseeded Indo-American duo prevailed over the Russian-Slovenia combo 6-4 2-6 10-7 in a tightly-contested final of the USD 2,000,000 hard court event.
The match lasted for one hour and 32 minutes.
After a rather easy victory in the first set, the eventual winners were made to struggle as Petrova and Srebotnik fought back strongly to take the second set.
Sania and Bethanie, however, sealed the issue in their favour by winning the crucial third set.
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This was Sania's 16th championships wins in doubles, and she also has one single title win.
Both the pairs had two aces each but Petrova and Srebotnik, interestingly, committed just one double fault compared to three by the Indo-American duo.
As far as first service was concerned, the runner-up team's winning percentage was 68 compared to the winners' 62 per cent.
However, in the second service, Sania and her partner's winning percentage was 53 compared to the runner-up's 41 per cent.
The total points won were 63 by Sania and Bethanie even as their opponents fell short by just one point.