There is no official limit I don't think, but I think we ask users to spread out the tournaments as much as possible. I agree with you that things could get out of hand.

__________________
0173-0974-1865 < Brawl friendcode!4253-4013-1847 < MKWii FC!
{Spur of the moment Toad Mario Kart poem below! lol it is bad!}