CASA Philadelphia started in 2005 with twelve 11v11 teams and was founded to provide a place to play for individuals of all backgrounds and skill levels. From the beginning, CASA has been focused on providing an inclusive opportunity to play at the right level of competition based on sporting merit with promotion and relegation being a key component of the league. 

It has grown from that humble beginning to now offer seven 11v11 divisions, as well as a multitude of 7v7 and 5v5 divisions for all adult players regardless of background, gender identity, or skill level.