Tennisphere

The Tennisphere App lets users find and connect with local players, organize players into Friend and Group Lists, schedule Events and Teams, and foster tennis in their communities.
Create your own Groups in your Player List to send group messages, create events with the whole group instantly added, or create an event with a number of available spots, invite a large group, and let players claim their spot and automatically update the event.
Invite friends to join from your contact list and they will automatically be added to your Friends List.
Mark players as Friends and create a short list of players you schedule and communicate with most often. Send private messages and share administration of frequent events.