Registration day is on Mondays, You can register here at
https://www.funtrivia.com/knockout/ But you have to become a member first!
https://www.funtrivia.com/
You register for the tournament on Monday but you go play on Tuesday, When you register they will place you in a tournament, Mine is usually #83 or #84 and when you play Tuesday you that are in the same tournament number play against each other, And who wins gets to play Wednesday and so-on, And who wins Saturday gets crowned Sunday.