Australia’s world number one Ashleigh Barty has been knocked out of Wimbledon, losing her fourth round match against American Alison Riske.

World number 55 Riske fought back from a set down to win 3-6 6-2 3-6 in one hour 36 minutes on court two to reach a first Grand Slam quarter-final.

French Open champion Barty had not dropped a set at the tournament.

Riske will face the winner of seven-time champion Serena Williams’ match with Spain’s Carla Suarez Navarro.

More to follow.