Top-seeded Agnieszka Radwanska kept up her serene progress at the Nottingham Open by beating Lauren Davis in straight sets to reach the semifinals of the Wimbledon warm-up tournament on Friday.

Finding some form after a disappointing first half of the year, the 13th-ranked Radwanska won 6-2 6-2 for her third straight easy victory in central England this week and will play Monica Niculescu in the last four.

“Winning another title is always great – I am going to do everything in my power to get it,” said Radwanska, a Wimbledon finalist in 2012. “Every match helps. Now I really feel the grass and I’m comfortable on it.”

Radwanska has not dropped more than three games in a set this week.

Niculescu, who is unseeded, beat Johanna Konta 6-2 2-6 6-2 to end British hopes of a home winner.

Fifth-seeded Alison Riske of the United States advanced after Belgian opponent Yanina Wickmayer retired because of food poisoning when losing 6-2 2-0.

Play was then suspended for the day because of rain, meaning the fourth quarter-final between Ana Konjuh and Sachia Vickery will be played on Saturday.