Houston Texans defensive end J.J. Watt says he knew concussions were a risk when he decided to play football, so he's not any more alarmed by the studies of prolonged head trauma suffered by NFL players. ''I think there's this big perception that players have been shocked by the concussion news that has come out,'' Watt told The Associated Press Thursday at a Verizon event promoting the (hash)minute50 VR Experience. While head trauma in football comes as no surprise, the conversation intensified after the recent film, ''Concussion,'' which brought to light that some former players suffered from the asymptomatic brain disease Chronic Traumatic Encephalopathy, or CTE. More...