You take a risk in just about any sport. The question becomes, if the action of one participant is found to be outside the norm for that particular sport and causes a costly injury to another, does the offending party have some responsibility? If you're golfing and somebody from the group behind you drives into your group and rearranges your face, even though you took a risk by stepping on the course, should they pay for your medical expenses? If you're playing rec-league softball and some guy smacks the catcher either on the backswing or follow through and breaks a jaw, is he responsible? We expect people to follow rules or suffer consequences when driving, maintaining property, or going through daily life. If a players thinks that he is beyond a lawsuit on the ice, then that is naive as well.