British pair Katie Boulter and Heather Watson's hopes of an Olympic medal were ended by Italian duo Sara Errani and Jasmine Paolini in the women's doubles quarter-finals.
Boulter and Watson lost 6-3 6-1 to the third seeds in a tough match where they had few opportunities.
The Britons have gelled together superbly this week, beating some notable opponents to reach the last eight.
But Errani and Paolini, who were French Open runners-up on the same Roland Garros clay little over seven weeks ago, proved a different proposition.
Asked what makes the Italians so good, Watson, 32, said: "They don't miss.