STANFORD, California (AP) -- Results Wednesday from the Bank of the West Classic at Taube Family Tennis Stadium (seedings in parentheses):
Alison Riske, United States, def. Carla Suarez Navarro (3), Spain, 6-4, 6-4.
Mona Barthel, Germany, def. Andrea Petkovic (6), Germany, 5-7, 6-2, 7-6 (4).
Chin-Wei Chan, Taiwan, and Darija Jurak, Croatia, def. Vitalia Diatchenko, Russia, and Anna Tatishvili, United States, 6-4, 7-5.