Second seed Barty dumped out of US Open at fourth round stage by Wang

Barty who was seen by many as being a potential winner of this year's tournament; based on form was not at her best by any means throughout the contest against the 18th seed.

This included 39 unforced errors from the Australian; she also failed to convert all nine of her break points.

For Wang, it doesn't get easier as she will face either six-time champion Serena Williams or Petra Martic who will also play today.

https://twitter.com/usopen/status/1168200807143149572?s=20