Alison Riske upsets No. 10 Carla Suarez Navarro to reach quarters

American Alison Riske beat third-seeded Carla Suarez Navarro 6–4, 6–4 to reach the Bank of the West Classic quarterfinals.
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STANFORD, Calif. (AP)—American Alison Riske changed her schedule this season to include the Bank of the West Classic for a variety of reasons. One of them was to change her luck.

The 59th ranked Riske did just that, beating third-seeded Carla Suarez Navarro 6–4, 6–4 on Wednesday to reach the quarterfinals.

Riske, making her main draw debut in the event, beat a top-10 player for the first time in nearly two years and the second overall in 12 tries.

Germany's Mona Barthel also knocked off a seeded player, beating sixth-seeded compatriot Andrea Petkovic 5–7, 6–2, 7–6 (4) and could next play top-seeded Caroline Wozniacki, who makes her first appearance Thursday night.