Stanford, CA (SportsNetwork.com) - Two-time champion Serena Williams was a second-round winner, while No. 2 seed Agnieszka Radwanska was sent packing Wednesday at the Bank of the West Classic, a U.S. Open Series tennis event.
Playing her first tennis since a stunning third-round loss at Wimbledon last month, Williams beat Karolina Pliskova by a 7-5, 6-2 score on the hardcourts at Taube Family Tennis Center.
Williams was the back-to-back titlist here in 2011 and 2012.
Varvara Lepchenko took down Radwanska by a 6-3, 3-6, 6-4 margin. Radwanska was last year's Stanford runner-up to Slovak Dominika Cibulkova.
Next up for Lepchenko is 19-year-old American qualifier Sachia Vickery, who bested Puerto Rico's Monica Puig 6-7 (4-7), 6-2, 6-1.
Andrea Petkovic, the No. 8 seed, handled Naomi Osaka 6-2, 6-2.
The 2014 Stanford champion will claim $120,000.