Unless its specific to lacrosse its irrelevant? Ok Doc. Take two minutes to google "one sport kids injury" instead of posting silliness.
We are having a conversation about a topic here. There is no reason for a simple minded person to go the personal attack route. Same person on the other threads acting like a fool possibly?
Moving on...is it healthy physically and developmentally to only play one sport year round? It's an argument with plenty of ammo on both sides. Many feel it's better to experience other organized sports that require different strategies and on field decision making skills that help expand the players primary sport repertoire. Others think it's better to focus on one sport and continue to improve. I feel diversified activities in the off season including another sport is preferred to single sport year round activities.