2018 US Open Women's Singles - Angelique Kerber and Petra Kvitova both knocked out in third round Saturday Sep 01,2018

Angelique Kerber and Petra Kvitova were both knocked out of the US Open on Saturday Sep 01,2018, leaving defending champion Sloane Stephens as the sole remaining top-six seed in the women's draw.

Wimbledon champion Kerber was beaten 3-6 6-3 6-3 by Slovak 29th seed Dominika Cibulkova in the third round.

Two-time quarter-finalist Kvitova lost 7-5 6-1 to in-form Belarusian Aryna Sabalenka.

None of this year's Grand Slam winners are now left in the women's singles.