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.