Assessment of Head Collision Events During the 2014 FIFA World Cup Tournament

The consensus statement from the 2012 and 2016 International Conference on Concussion in Sport, adopted by Federation Internationale de Football Association (FIFA), indicates that players showing any feature of concussion should be immediately withdrawn from play and assessed by sideline health care personnel. 1 Such recommendations and their enforcement may influence officiating, coaching, and play of millions of young players. The incidence, characteristics, and assessment of head collision events incurred during the 2014 FIFA World Cup were studied to evaluate compliance with the consensus statement.