Bump, Set, Attack in i9 SportsÂ® volleyball! The i9 Sports volleyball program is played indoors or outdoors in a 4 v 4 or 6 v 6 format. Small team sizes allow your child to get maximum touches on the ball. The game is designed to keep kids moving, engaged and learning new skills. With modified court sizes and rules, the i9 Sports format is the perfect way to teach kids ages 7 - 14 the fundamentals of volleyball while developing their hand-eye coordination, agility, and overall athletic skills. And best of all, it comes with all the benefits youâ€™ve come to expect from i9 Sports: fun, safety, and emphasis on good sportsmanship.