PDF) The serve clock reduced rule violations, but did not speed up the game: A closer look at the inter-point time at the 2018 US Open
The new serve clock in tennis appears to be backfiring | The Economist
US Open shot clock: What is it? Is there a punishment? What does Rafael Nadal think? | Tennis | Sport | Express.co.uk
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U.S. Open Will Test Countdown Clock Rules?
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/https://www.thestar.com/content/dam/thestar/sports/tennis/opinion/2018/08/24/the-serve-clock-could-be-tenniss-countdown-controversy/nadal2.jpg "The serve clock could be tennis's countdown controversy | The Star")
The serve clock could be tennis's countdown controversy | The Star
Developing Your Tennis Serve in 11 Easy Steps - Tennis 4 Beginners
Serve (tennis) - Wikipedia
U.S. Open will use a 25-second serve clock to speed up pace of play - The Washington Post
An early look at the pros and cons of tennis' new serve clock
Pace of play a hot-button tennis issue with the arrival of the 'serve clock'
Australian Open 2020: Shot clock rules explained as Novak Djokovic blasts umpire | Tennis | Sport | Express.co.uk
Why the tennis “serve clock” may be a waste of time - Kovalchik - 2018 - Significance - Wiley Online Library
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Serve Clock Started | Senior Tennis and Fitness
Love It or Hate It, There's No Ignoring Tennis's New Serve Clock - The New York Times
New rules wrinkles ready for US Open – Open Court
US Open to introduce 25-second serve clock on courts - Tennis365
tennislessons | Tennis serve, Tennis, Tennis games
An early look at the pros and cons of tennis' new serve clock
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USTA, ATP & WTA Implement Rules Innovations At Events Throughout Summer | ATP Tour | Tennis
