Muguruza dismantles Rybarikova to surge into 4th round

NEW YORK - Third-seeded Garbine Muguruza needed a little over an hour to move into the US Open fourth round.

Muguruza, this year's Wimbledon champion, defeated 31st-seeded Magdalena Rybarikova of Slovakia 6-1, 6-1. The Spaniard has yet to lose a set at Flushing Meadows this year and has dropped only nine games.

Next up for Muguruza is two-time Wimbledon champion Petra Kvitova, the No. 13 seed, who beat 18th-seeded Caroline Garcia 6-0, 6-4.