Bertens wins twice in a day to reach semi-finals on home soil

World number four Kiki Bertens was forced to retire from the French Open due to illness but could add to her list of honours this weekend. Kiki Bertens will face teenage qualifier Elena Rybakina in the semi-finals on home soil after winning twice at the Rosmalen Grass Court Championships on Friday. Bertens finished off Arantxa Rus 7-5 …