Katie Boulter and Heather Watson advanced to the quarter-finals of the Olympic tennis women's doubles with a straight sets win over Brazilian duo Beatriz Haddad Maia and Luisa Stefani.

Following on from the two dramatic wins from Andy Murray and Dan Evans in the men's doubles, it was much more straightforward for GB's women as they won 6-3 6-4.

The British duo struck early in the first set and held on to their advantage comfortably, but were challenged in the second set as the Brazilians put the pressure on, forcing them to save two break points.

The pair responded strongly breaking the Brazilians and saving more break points before finally going on to close out the match on their third match point. Boulter used her power from the baseline, leaving Watson to show off her speed and agility at the net.

They will face the third seeds from Italy Sara Errani and Jasmine Paolini, who are both former Roland Garros singles finalists.