Seventh-seeded Karolina Pliskova of the Czech Republic stunned fifth-seeded defending champion Caroline Wozniacki of Denmark 6-2, 6-3 in a clash between the former world No. 1s in the White Group of the WTA Finals here.

Wearing a bandage on her right calf, Pliskova held her serve throughout the 92-minute match on Sunday night to take revenge for her 2017 WTA Finals defeat in the same stage, narrowing her career head-to-head deficit against Wozniacki to 6-4, reports Efe news agency.