We love Aussie rules football, but like other contact sports it comes with risk of head knocks for the players. New figures based on analysis of the brains of deceased players, reveal a big increase in the number of them known to have the degenerative brain disease CTE. Is the AFL doing enough to support families after a tragedy and inform players at all levels of the game about the risks associated with football? Today, Four Corners reporter Jess Halloran on her investigation into CTE and the AFL.  Be aware, this episode discusses mental health and suicide. If you or anyone you know needs help, you can call Lifeline on 13 11 14 Featured:  Jess Halloran, Four Corners reporter