Third-ranked Karolina Pliskova of the Czech Republic advanced to the quarterfinals of the Rogers Cup on Thursday, beating Anett Kontaveit of Estonia 6-3, 7-5.
Pliskova, who can reclaim the top spot in the rankings this week, will next face Bianca Andreescu of Canada, who beat fifth-seeded Kiki Bertens of the Netherlands 6-1, 6-7 (7), 6-4.
The 19-year-old Andreescu improved to 5-0 against top-10 opponents this year. She had never faced Bertens before.
Serena Williams, Wimbledon champion Simona Halep and No. 2 Naomi Osaka were playing later Thursday.
Also Thursday, American Sofia Kenin beat Ukrainian teenager Dayana Yastremska 6-2, 6-2. Kenin beat top-ranked Ashleigh Barty in the previous round. In the quarterfinals, she will face sixth-seeded Elina Svitolina, who defeated Belinda Bencic 6-2, 6-4.
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