Wimbledon organizers have apologized and explained that “human error” was the reason behind the electronic line-calling system being turned off during a match on Sunday.

It’s been another incredible run for Kartal, who reached the third round last year before falling bravely to Coco Gauff. Another victory today at SW19 would see the world No51 vault above both Katie Boulter and Emma Raducanu to become the new British women’s No1.

Sonay Kartal said there wasn’t much she could do after the electronic line calling system glitched at a crucial moment in the first set of her match against Anastasia Pavlyuchenkova. The Russian had a game point at 4-4 and Kartal appeared to send the ball wide but a call never came.