TIANJIN, China (AP) -- Karolina Pliskova and Aryna Sabalenka both moved closer to a spot in the WTA Finals by reaching the quarterfinals at the Tianjin Open on Wednesday.
Pliskova, who saved the one break point she faced in the final game of the match, is 4-1 against Hercog and now in eighth place in the race to qualify for Singapore.
Sabalenka is trying to qualify for the year-end WTA Finals for the first time.
Also, fifth-seeded Hsieh Su-Wei defeated Russian qualifier Veronika Kudermetova 6-2, 2-6, 6-2, and sixth-seeded Petra Martic ousted Chinese wild-card entry Liu Fangzhou 1-6, 6-0, 6-1.
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