Petra Kvitova maintained her unbeatable form until the very end at the St. Petersburg Ladies Trophy, dethroning defending champion Kristina Mladenovic to win her 21st career title.
No.5 seeds Timea Babos and Kristina Mladenovic upset second-seeded Ekaterina Makarova and Elena Vesnina to win their first Grand Slam title as a team in Melbourne -- in their first event back together since 2015.
Caroline Wozniacki takes home her maiden Grand Slam title and returns to World No.1 for the first time in six years, outlasting top seed Simona Halep in three grueling sets.
Caroline Wozniacki will be the new WTA World No.1 after the Australian Open on Monday, January 29, exactly six years after she last held the top spot.
Caroline Wozniacki is better than ever, while Simona Halep is closer than she's ever been. WTA Insider breaks down one memorable Australian Open final.
The BNP Paribas WTA Finals Singapore presented by SC Global is set to enter its final year in 2018 on a high note.