Hmm, shoot the devs of onefootball a request as I don't see why they wouldn't add the National Women's Soccer League to the app since it is one of the comprehensive football (soccer) apps out in the windows store.
Although Women's football (soccer) is taking off really well app support is not just there yet sadly.
Alternatively instead of waiting around maybe you could capitalize on that and make your own app :winktongue:.
Joking aside, channel9.msdn.com would be a handy place to start :wink:.