No. 4 Siegemund through to semifinals of Bucharest Open

Laura Siegemund of Germany plays a return to Madison Keys of the US during their women's singles match on day one of the Wimbledon Tennis Championships in London, Monday, June 27, 2016. (AP Photo/Tim Ireland)
Tim Ireland/AP

BUCHAREST, Romania (AP) Fourth-seeded Laura Siegemund advanced to the semifinals of the Bucharest Open by beating Polona Hercog 6-2, 6-1 Friday.

The German landed 77 percent of her first serves and won 67 percent of the points.

Also, Vania King of the United States beat French player Pauline Parmentier 6-3, 6-1. King saved all 12 break points she faced.