The swedish

New York: Three-time Grand Slam champion Andy Murray referred tennis' first experience with video-assist review (VAR) system at the US Open as a "bit of a farce" after the technology malfunctioned in his first round match.

A video review system has been introduced at the Grand Slam which allows players to challenge calls such as double bounces or contact with the net.

Each player gets three challenges per set and, according to the US Open, “the VR official and VR operator will send the video to a screen on the chair umpire's chair as well as stadium screens when available."