Australian Open 2018 to have a 25-second shot clock with Grand Slams to move from 32 to 16 seeds in 2019
![Shot clock, warm-up clock to be implemented at 2018 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event Shot clock, warm-up clock to be implemented at 2018 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/b_USTA760876_20170822_DSC_6169.jpg)
Shot clock, warm-up clock to be implemented at 2018 US Open - Official Site of the 2022 US Open Tennis Championships - A USTA Event
![Rafael Nadal left disappointed with Australian Open set to use shot clock | Tennis | Sport | Express.co.uk Rafael Nadal left disappointed with Australian Open set to use shot clock | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/590x/Rafael-Nadal-882556.jpg)
Rafael Nadal left disappointed with Australian Open set to use shot clock | Tennis | Sport | Express.co.uk
![Australian Open to get shot clocks among other major changes at Grand Slams | Sports News,The Indian Express Australian Open to get shot clocks among other major changes at Grand Slams | Sports News,The Indian Express](https://images.indianexpress.com/2017/01/australian-open7591.jpg)
Australian Open to get shot clocks among other major changes at Grand Slams | Sports News,The Indian Express
![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 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](https://pbs.twimg.com/media/DIACUfLW0AAxEj0.jpg)
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
![US Open shot clock: What is it? Is there a punishment? What does Rafael Nadal think? | Tennis | Sport | Express.co.uk US Open shot clock: What is it? Is there a punishment? What does Rafael Nadal think? | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/590x/US-Open-1012599.jpg?r=1536531179748)