I've just launched a new Full Ace Tennis Tour with online tournaments. You can register and play here:
The tour will officially begin from 2018 with official ranking points events. But there are already some warm-up tournaments that you can join an play. The website will have many more features in future like head-to-head, statistics, hall of fame page with best players and many more.
Important: After you create your account on website, you must register your acount on forum too to be able to be able to use it!