Held that federal labor law did not preempt retired football players' claims that the National Football League encouraged them to take pain-masking medications without warning them of the drugs' risks. The NFL contended that the players' claims were preempted by sections 301 of the Labor Management Relations Act. Rejecting the league's argument, the Ninth Circuit concluded that, as pleaded, the players' negligence and other state law claims did not arise from collective bargaining agreements or require their interpretation. The panel therefore reversed dismissal of the proposed class action suit.