SINGAPORE - Martina Hingis and Sania Mirza extended their monster winning streak to 20 matches in a row to reach the semifinals of the BNP Paribas WTA Finals Singapore presented by SC Global.
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Facing Timea Babos and Kristina Mladenovic, who'd beaten them the last time they played in Rome this year, Hingis and Mirza lifted their game at exactly the right times - they got the only two breaks of the match, at 4-all in the first set and 5-all in the second, subsequently serving both sets out.
The No.1-seeded Hingis and Mirza edged the No.4-seeded WTA Rising Stars in 90 minutes, 6-4, 7-5.
"We had played them twice before and we were 1-all, so we knew we had to come out and play well, like we've been trying to do every match here at the WTA Finals," Mirza said in her on-court interview.
"We just tried to come out and play our best, and that was enough to win today."
And so, Hingis and Mirza's winning streak - which has brought them back-to-back-to-back-to-back titles at the US Open, Guangzhou, Wuhan and Beijing - hits a milestone 20 matches in a row in Singapore.
They're two wins away from their ninth WTA doubles title since joining forces eight months ago.
"It feels pretty good!" Hingis said after Friday's victory. "Sania came up to me and asked me why don't we try to play together, and at first we both had our partners, but as soon as we started we won a hat-trick right away at Indian Wells, Miami and Charleston. It was amazing how fast we clicked.
"It was a dream to come here to Singapore, and hopefully we can keep winning here."
The Swiss-Indian duo was also named the year-end World No.1 doubles team on Friday night.
Hingis and Mirza will play the No.3 seeds, Chan Hao-Ching and Chan Yung-Jan, in the semifinals.
Meanwhile, the last round robin match of the doubles took place, and saw No.6 seeds Raquel Kops-Jones and Abigail Spears edge No.7 seeds Andrea Hlavackova and Lucie Hradecka, 6-3, 3-6, 11-9.
But it was Hlavackova and Hradecka who ended up advancing to the semifinals, and the Czechs will play No.8 seeds Garbiñe Muguruza and Carla Suárez Navarro for a place in the final on Saturday.