Wimbledon’s much-discussed transition to a fully automated line-calling system faced fresh scrutiny on Tuesday after a glitch forced a point to be replayed during the quarterfinal clash between Taylor Fritz and Karen Khachanov.

A malfunction with Wimbledon's new electronic line calling system required a point to be replayed during a quarterfinal match between Taylor Fritz and Karen Khachanov.

The controversial call, which Raducanu questioned, was a first serve by Sabalenka at 2-4, 15-0, which did appear to miss the line upon replay. The serve ultimately led to Sabalenka going up 30-0 in a pivotal set during the match, helping her stage a comeback after going down early.