Tianjin - Karolina Pliskova and Aryna Sabalenka both moved closer to a spot in the WTA Finals by reaching the quarter-finals at the Tianjin Open on Wednesday.
The top-seeded Pliskova beat Polona Hercog 6-1, 6-2, while the fourth-seeded Sabalenka defeated Magda Linette 6-1, 6-3.
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 wildcard entry Liu Fangzhou 1-6, 6-0, 6-1.