"rivals night" is actually Rival League night. It is basically a friendship type of event setup to get kids mat time. It's not a bracketed tournament by any stretch. It is for beginners and less experienced kids and parents. They run two hours and done on Friday nights. It's a great way for kids starting to get some mat time. It can be a little chaotic as there are no brackets and it literally is just getting kids matched up and out on the mat. It has worked well and all of the clubs that are part of the league have benefited from it. We started it with 3 or 4 clubs and it has grown to include around 7-8 clubs, with some surrounding clubs that don't host an event that compete in it as well.