The No.3-seeded Hsieh and Peng were in trouble early, dropping the first set, 6-2, but they came storming back to take the second set, 6-3, and built quadruple match point in the match tie-break, 9-5. They missed those four and another at 10-9, but they got sixth time lucky to win, 26 63 1210.
"They started playing well in the first set and it put a lot of pressure on us," Peng said. "Also, it was our first time playing them together as a team, so we also didn't know how to play them a little bit. We called our coach at the start of the second set and from there we just tried to fight, and we're really happy we could come back and win the second set and of course win the match in the end, as well."
Peng and Hsieh now have seven WTA doubles titles, one in 2008 (Bali), three in 2009 (Sydney, Rome and Beijing) and three in 2013 (Rome, Wimbledon and Cincinnati). Even more impressive is that the Taiwanese-Chinese pair has never lost in a final - they are 7-0 in WTA doubles finals together.
This was Peng's first tournament since winning Wimbledon with Hsieh - but she did keep very busy.
"I had to go back to China to play the national games there," Peng said. "It's every four years for us, and it's very important for my team, so I had a long week playing that and a lot of tough matches."
What's next for Hsieh and Peng?
"We're going to play New Haven," Peng said.
"We're trying to get into Istanbul," Hsieh added. "We've never played Istanbul before, so we're trying to schedule the tournaments better and trying to win a little bit more because we haven't been playing a lot of tournaments. Now, including New Haven, we'll have played nine tournaments together this year."