Specializing in a sport early on does not guarantee success, except with the exception of gymnastics and figure skating which seem to contradict this statement. Over 80% of top tier athletes played multiple sports, and never focussed with tenacity on any specific sport. When children play pick up games, they statistically have better decision making skills because there is no adult intervention. Organized sports which have adult intervention tends to have the opposite effect and provides a higher chance of less competitive children, who  do not participate, and do not have strong management skills because typically if teams are lopsided in a pick up game, children are apt to change the players on each team, but if teams are lopsided in an organized game, the game continues on until the end