Head injuries in the Australian Football League

Head injuries in the Australian Football League (AFL) is a controversial topic with many players sustaining head related injuries during the AFL season, some of these being caused by the players themselves "ducking" their heads in order to receive high contact which warrants a free kick. One of the most common forms of head injury sustained in the AFL is concussion, which will affect about 6-7 players per team, per season.

Source: Wikipedia — Head injuries in the Australian Football League (CC BY-SA 4.0)