Electronic Line Judge was employed in the finals of Men’s World Championship Tennis, held in May 1974 in the Southern Methodist University Indoor Stadium in Dallas & also in the final of the Ladies Virginia Slims Championships, held in Los Angeles in 1975.
An Electronic Line Judge is a technology used in Tennis for the callings i.e., when the ball hits the outer parts of the court. It enables the umpire to take a fair decision in the match whether the ball has landed on the court or not. This technology was introduced in the year 1970 by Geoffrey Grant, an avid tennis player, and Robert Nicks, an electronics engineer. The technology was successfully used for the first time in 1974 at a professional tennis tournament.
The Electronic Line Judge aims to help the officials in making better decisions using digital sensors.
It has a conductive tape to trace the landing of the balls on indoor tennis courts.
It was also used at the Bernard sponsored tennis event, held in 1977.