On-court serve clocks, which count down the time between points, will be introduced at North American hardcourt tournaments leading up to the U.S. Open.
KAREN CROUSE, New York Times: Tennis
Wed, 07/11/2018 - 2:09pm
On-court serve clocks, which count down the time between points, will be introduced at North American hardcourt tournaments leading up to the U.S. Open.