# Tennis: The International Tennis Federation announced electronic line calling will become available at more tournaments. The system will now be designated as gold, silver or bronze, with gold being used at elite competitions like the Grand Slam tournaments, the WTA and the ATP Tours, and the Billie Jean King Cup and the Davis Cup. Silver will be used at second-tier competitions, and bronze at national-level competitions. The French Open is the only of the four Grand Slam tournaments not yet using the electronic system.
Tennis: Electronic line calling will become available at lower-tier tournaments as well