Concussion in sport is a big current issue, its an issue that people look at the sport and because the injury is not immediately obvious, you have the player and fans expecting the player to carry on. You only have to look at the attitude within this thread.

The studies currently going on within sports about the consequences of repeated concussion injuries are shocking, especially in american sports where the study is based.

As an amateur coach you feel a bit helpless where you see a professional player, surrounded by a professional medical team, and 100s of cameras documenting his every move, can continue to play a large percentage of a football match with a concussion injury.