TieBreak

Hi guys I'm Lorenzo Santi, developer of Tiebreak. We've just launched it on the App Store where you can download it for free: https://goo.gl/Ze7QF5 With Tiebreak is possible to track points directly from the Apple Watch at the end of each rally and after just one set the app will start giving gaming tips based on the collected data. Users can easily access to all time stats in the Apple Watch, compare matches, create opponents’ profiles and prepare for the next match. Every feedback is highly appreciated, so don't hesitate to contact me here, on twitter @Lolloz89 or via email santi@dmdigital.it

That is a great use case of the watch.