Former Wimbledon runner-up Agnieszka Radwanska was an easy second-round victor Thursday at the Nottingham Open tennis event, a grass-court Wimbledon tune-up.
The top seed from Poland pasted American Christina McHale 6-3, 6-1 at Nottingham Tennis Centre.
Radwanska's quarterfinal opponent will be another American -- Lauren Davis.
Day 4 upsets came when 20-year-old American qualifier Sachia Vickery fought back to oust second-seeded Zarina Diyas of Kazakhstan 4-6, 7-6 (7-5), 6-1 and Croat Ana Konjuh dismissed sixth-seeded Aussie Casey Dellacqua 6-4, 6-2.
In other second-round action, British wild card Johanna Konta edged out Puerto Rican Monica Puig 4-6, 6-4, 7-6 (7-5) in a match that was suspended after two sets on Wednesday and Belgian Yanina Wickmayer got past Serb Bojana Jovanovski 6-0, 6-4.
The other quarters will pit fifth-seeded American Alison Riske against Belgian Yanina Wickmayer, Konjuh versus Vickery and Romanian Monica Niculescu against Konta.
This week's champion will collect $43,000.