In the past 20 years, the incidence of concussion in direct contact sports has significantly increased. The incidence of concussion in rugby players ranges between 8 to 17 episodes / 1000 playing hours. A recent study published by the French Rugby Federation (FFR) and the National Rugby League (LNR) showed similar results. The latter study was performed analyzing the French "TOP14", which includes 14 teams participating in professional rugby championships. At least two concussions were diagnosed each week. Despite the recent evidence, cognitive assessment remains the only means to determine whether or not players experiencing concussions can return to the game or not.