Sign-ups will be open until February 24th at 11 AM GMT. The bracket with sign-up page can be found here: https://challonge.com/scr_1

ALL COURSES TOURNAMENT RULES:

The use of a Booster or Rare Booster is not allowed. You can discard your Booster by quitting out of a Race with Rivals. Runs are done in the Ghost Race mode. Tracks are played in order, starting with Simple Circuit and ending with Zero-G Crash Course. Races will be tracked with real time, with ties being determined by in-game time. - All rounds will be best of 3, with the exception of winner's finals, loser's finals, and grand finals, which are best of 5. Each stage of the bracket will last up to one week. In that time, you are responsible for figuring out when you and your opponent will be able to race. If one or both players set to race will be completely unavailable for their match, please let an organizer know immediately. Depending on the status of the tournament at that time, it may be possible to postpone your match without disrupting bracket. If you do not let a TO know, you may be disqualified. In the event of a dispute with a match, a TO will analyze both runners' footage and determine a result. Please try to record all of your matches, as runs without video evidence cannot be verified by a third party.

For more details join the StreetPass Mii Plaza server linked in this game's page.