How to watch on a computer
You need to purchase a subscription to watch Tennis TV on your computer. Tennis TV works well on both PCs and Macs.
Your subscription can also be used on mobile devices (iOS and Android) and a number of TV devices (Apple TV, Roku, Amazon Fire TV, XBox One and Android TV).
On computers and laptops, Tennis TV uses both flash and HTML5 players. If using Google Chrome, you will need to make sure that your browser is set to ‘allow flash’, otherwise you will be sent to the alternative HTML5 player which has fewer features than the flash player.
Please see this link on the Google Support website about how to do this.
For Safari users, this article explains how to allow flash player.
There is a specific Tennis TV instruction of how to do this for Mac users here:-
Most live matches and full replays are produced in true 1080p high-definition format. The streaming rates adapt to connection speeds up to 5 Mbps in HD, this is dependent on your connection and which device you are using. See this page for more information.
Watching on ATPWorldTour.com
If you have a valid subscription, you can access live matches on Tennis TV through the ATP’s official website at http://www.atpworldtour.com/en/video/watch-live