However, in some tournaments, the organizers do not actually use a hat, but form teams while taking into account skill, experience, sex, age, height, and fitness level of the players in the attempt to form teams of even strength. Many times the random element remains, so that organizers randomly pick players from each level for each team, combining a lottery with skill matching. Usually, the player provides this information when he or she signs up to enter the tournament. There are also many cities that run hat leagues, structured like a hat tournament, but where the group of players stay together over the course of a season.