double fault

A running forehand down the line and another thunderous winner piled on the pressure as Lamens tried to hold serve in a lengthy seventh game, with double faults aiding Raducanu as she eventually broke.

Raducanu won four games in a row to serve for the match at 5-3 - then was broken again after huge errors with a backhand drive into the net and a double fault.

The only blip for the 13th seed came when he served for the match at 5-2, relinquishing his double break advantage with a double fault on break point.

She saved two break points, but Rybakina took advantage of a third to level it up and, after holding her serve, she broke Boulter thanks to a double fault on match point.

Another double fault in the fifth game gave Sabalenka a chance for a second break, which she grabbed with one of her 32 winners before serving out victory in one hour and 26 minutes.