“Insurers will be tightening up their own coverage and make sports more expensive,” said Robert Boland, who teaches sports law at New York University. “It could make the sustainability of certain sports a real issue.”
http://www.nytimes.com/2012/12/11/sports/football/insurance-liability-in-nfl-concussion-suits-may-have-costly-consequences.html?pagewanted=all&_r=0