US Open 2019: Garbine Muguruza out but Petra Kvitova & Belinda Bencic through

[Nickie]

Former Wimbledon champion Garbine Muguruza is knocked out of US Open in the first round with a 2-6 6-1 6-3 defeat by Alison Riske.

More... (http://www.bbc.co.uk/sport/tennis/49489730)