STANFORD, California (AP) Alison Riske and 17-year-old wildcard entry CiCi Bellis each upset a ranked opponent on Tuesday in the first round of the Bank of the West Classic.
Bellis was down a break in the second set but rallied to beat sixth-seeded Jelena Ostapenko 6-4, 6-4 for her first win over the year on the WTA tour.
Riske came back to oust No. 8-seeded Varvara Lepchenko 2-6, 6-3, 7-6 (4), a semifinalist here in the last two years. Riske won five straight games in the second set and the first three points of the third-set tiebreaker.
Urszula Radwanska and Magda Linette won afternoon matches and each will face an opponent with a first-round bye.
Radwanska goes against second-seeded Dominika Cibulkova and Linette faces top-seeded Venus Williams.
