Djokovic and Williams march on as Kvitova joins exodus of seeds
Only three of top eight women's seeds are left after Wimbledon champion is sent packing by Serb

World number ones Novak Djokovic and Serena Williams advanced safely to the next round of the U.S. Open on Saturday but the women’s draw saw yet another big upset as Wimbledon winner Petra Kvitova was sent packing by a 145th-ranked qualifier.
Third-seed Kvitova fell victim to 21-year-old Serbian Aleksandra Krunic, leaving only three of the top eight women’s seeds still in the tournament. Simona Halep (2nd), Agnieszka Radwanska (4th), Angelique Kerber (6th) and Ana Ivanovic (8th) have already been shown the door.
While the women’s draw has been ravaged by upsets the top 10 men are still in the hunt, with number three Stan Wawrinka, number five Milos Raonic, eighth seed Andy Murray and number nine Jo-Wilfried Tsonga all moving on.
The shock of the day was delivered by the little-known Krunic, who stung the unsteady Kvitova 6-4 6-4.
The diminutive Serbian, who aims to graduate from university this year with a degree in economics, was a blur as she sprinted and slid into splits while stretching for returns.