Novak Djokovic states there is “no reason to keep line umpires” as we investigate the court of the future
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"Look carefully at the photograph from the 2020 US Open and you will see that something is missing: the match is being played without line judges. The use of Hawk-Eye Live at a Grand Slam tournament for the first time could be the shape of things to come, especially if Novak Djokovic has his way"