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TENNIS on Twitter: "Maybe a shot clock isn't such a bad idea, after all. @SteveTignor on the U.S. Open's new experiment | https://t.co/DNyjajcZlD https://t.co/u042gOoWFj" / Twitter
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Australian Open 2020: Shot clock rules explained as Novak Djokovic blasts umpire | Tennis | Sport | Express.co.uk
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