Hingis and Mirza were just three games into their second round encounter with Rodionova and Jans-Ignacik before rain forced them off the court. Their next opponents, No.4 seeds Chan Yung-Jan and Chan Hao-Ching were in the same situation and displayed similar resolve on Thursday, first defeating another pair of sisters in Nadiia and Lyudmyla Kichenok, 6-4, 6-2, and then taking out Julia Goerges and Karolina Plisova, 6-2, 6-2 in the quarterfinals.
The Chans have played Hingis and Mirza three times this summer, losing their first encounter with the top seeded team at the Rogers Cup before earning their revenge at the Western & Southern Open. Hingis and Mirza trailed the sisters 0-5 in the quarterfinals of the US Open, but dropped just two more games en route to a 7-6(5), 6-1 victory.
Losing just two matches since Wimbledon, Hingis and Mirza captured their first title after winning theUS Open in Guangzhou and are looking for their seventh title of 2015, having already qualified for the BNP Paribas WTA Finals Singapore presented by SC Global.
On the bottom half of the draw, Romanians Irina-Camelia Begu and Monica Niculescu benefitted from a walkover given by Garbiñe Muguruza and Carla Suarez Navarro, and will next face No.6 seeds and 2013 US Open champions Andrea Hlavackova and Lucie Hradecka, who were on schedule in winning their quarterfinal encounter against Gabriela Dabrowski and Alicja Rosolska, 6-4, 6-3.