WTA Finals Day 1: No.2 Garbiñe Muguruza vs. No.7 Jelena Ostapenko

White Group action concludes with a rematch of a tight three-set match from a few weeks ago at the Dongfeng Motor Wuhan Open, which saw Ostapenko edge Muguruza in three sets to earn her 1st career win over a reigning No.1.