Our sports programs keep kids active, teach friendly competition and introduce healthy practices for life. Explore our activities and learn why physical activity is so important for a child’s growth and well-being. JR. CELTICS Basketball LeagueLearn the game the Celtics way—building skills, confidence, and teamwork in a fun, co-ed league for ages 5–12.5. Learn More Flag FootballOur CO-ED Flag Football program provides young players a fun and exciting opportunity to engage in non-contact, continuous action while learning life lessons in teamwork. Learn MoreFor our refund policy and code of conduct, please click here to view all details.-THE JR. NBA, NBA, AND NBA PROPERTIES DO NOT IN ANY WAY CONTROL OR OPERATE THE ACTIVITIES OF ANY JR. NBA LEAGUE OR TEAM