Not knowing the name of the site I can say if this is something you "love" and are passionate about then you are a leg up. Starting something you feel strongly about will add drive to the venture.
I am also about to build a "soccer" site for my daughter. I'm not sure if I will monetize it but I will include:
Articles about soccer players
Bio pages, links, Photos etc.
video clips of the day or week then archive them.
Schedules and game listings would be good.
Contests for members with prizes if you are looking for memberships.
Spot light section for members to be recognized for accomplishments, victories, acts of sportsmanship etc.
Chalkboard, chat or forum.
Sponsors area for recognition and hopefully more support.
Equipment and Clothing ads on sales and great deals.
It would be nice to see your site so please do share. As I said I am about to embark on the same type of project.
Good Luck and welcome to NamePros. You have found a great community online.
namenut