Vondroušová in US Open fourth round

Wimbledon champion Marketa Vondroušová advanced to the last 16 of the US Open by beating Russian Ekaterina Alexandrova 6-2, 6-1 at the Billie Jean King National Tennis Center in New York on Saturday. Vondroušová, ranked No 9, will next play American Peyton Stearns. The Czech has now won 10 matches in a row at the Majors after her surprising run to the Wimbledon title while being ranked 42nd in the world.