Playing their first WTA Finals as a team, Timea Babos and Andrea Hlavackova upset No.1 seeds Chan Yung-Jan and Martina Hingis to make the final in Singapore.
Defending champions Ekaterina Makarova and Elena Vesnina eased through to the semifinals at the BNP WTA Finals Singapore presented by SC Global against Gabriela Dabrowski and Xu Yi-Fan.
Elina Svitolina eliminated World No.1 Simona Halep from the BNP Paribas WTA Finals Singapore presented by SC Global with a straight sets victory to complete round robin play.
WTA Doubles No.1 Martina Hingis revealed that she will play her final tournament at the BNP Paribas WTA Finals Singapore presented by SC Global, where she reached the semifinals with Chan Yung-Jan on Thursday.
WTA Finals debutante Caroline Garcia produced her second magnificent comeback of the week to recover from a first set whitewash to beat Caroline Wozniacki in an epic.
Kiki Bertens and Johanna Larsson overcame both ranking and scoreline deficits to upset No.4 seeds Ashleigh Barty and Casey Dellacqua in the third doubles quarterfinal at the WTA Finals.