In most sports there is a main city where people gather to play, so the city is the primary regional identifier. Next, there can be a club(s) which will help narrow down the list of people and associated events.
This app stores the city, club and your name in a cookie that automatically fills in when you open the app to save time and then looks up the information to see if anyone has initiated a playing event.
Clicking the red “X” will remove that entry, if it is an Initiator, the next person will be come the Initiator.
Try out the live version below or enter bit.ly/cmi2tennis into a browser on your mobile phone.
Demo below using City = New York City and Club = usopen