British number one Johanna Konta has been knocked out of the Miami Open in the fourth round by three-time champion Venus Williams.
Defending champion Konta, ranked 14th in the world, won the first set but eventually lost 5-7 6-1 6-2.
The 26-year-old had beaten world number eight Williams in straight sets in the semi-finals 12 months ago.
Williams, 37, will play fellow American Danielle Collins, who beat Monica Puig 3-6 6-4 6-2, in the quarter-finals.
The first set lasted just over an hour and Konta saved set point to turn it in her favour and take the early advantage.
But Williams, a seven-time Grand Slam singles champion, cruised through the second set to even the score, with Konta requiring a medical timeout before the deciding set.
The Briton hit three aces in a row to save a break point in the third set, but Williams continued her dominant comeback to serve for the match.