Each year many soccer families are faced with a dilemma: continue playing recreational soccer or make the big jump to competitive soccer. For those recreational players that have developed a higher level of soccer skill, the natural progression is to make the move to competitive soccer. However, this jump requires a family making a sizable commitment in terms of both time and financial resources.

For years, there has been a definite expressed need to provide an opportunity for young players to play soccer at an intermediate level, between the strict recreational play and the highly committed competitive play. Hence the birth of the Cal South Signature Leagues.

Signature Leagues are "localized" playing circuits formed by nearby recreational leagues that are comprised of "all-star" teams selected by the individual leagues through a selection process published by the individual recreational leagues. Each Signature League playing circuit is operated by a coordinator selected by the participating leagues who is responsible for ensuring the scheduling of games through the participating leagues.

There are a number of rules that are unique to the Signature League such as a 50% play rule for all players, a limit on the annual financial responsibility of the players, and a limitation on distance of travel.