We encourage our girls and son to be on at least one team sport and do one individual sport. My oldest daughter plays field hockey and tennis (individual). She is debating about playing basketball this winter. My other daughter plays field hockey, golf and dances. She is debating about playing tennis or soccer at school in the spring. When referring to team sports, I think of a sport that you interact with your team the entire game (swim, golf, tennis, etc., are not considered teams sports).
Our friend's daughters are playing field hockey at Brown and Dartmouth (next year). Pretty impressive! Also, field hockey is really not crowded like soccer where you have 150 girls trying out for the varsity teams. There is not travel involved until you get to high school (unlike soccer). We are fortunately that we have access to the University of Michigan field hockey team and facility.
Anyway, a great sport and a very fun season. We found this Hot Chocolate container at Dunham's last night to keep B warm during the tournament.