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.

Anastasia Pavlyuchenkova is not fond of grass courts, but the Russian tennis player registered a victory against the Japanese tennis sensation Naomi Osaka. Pavlyuchenkova has moved into the Wimbledon quarterfinals after nine years, defeating Osaka 3-6, 6-4, 6-4 en route. The majority of the crowd was cheering for Osaka.