Suggestion: Have a signup table. Specify your name, time you expect to play within say the next 24 hours, parameters on what type of game you want to play (size, timer, etc.). There should be an on-time rating, like how often the person shows up as promised. There could be a linked table for perspective competitors, i.e. people who are willing to show up and play at the proposed time. The OP could then rank the perspective competitors in order of how desired they are. Or they could be x'd, like, No I don't want to play you no matter what. Etc. etc. etc.

A signup table will help people coordinate their schedules. Later, when there are plenty of players, it'll still be useful in coordinating with more desired players.