A 9 year old batboy was accidentally hit in the back of his helmet when retrieving a bat. He later died. Just tragic. He got too close to the guy in the on-deck circle and was hit by his back swing.
http://www.cnn.com/2015/08/03/us/kansas-batboy-kaiser-carlile-death/index.html
http://www.cnn.com/2015/08/03/us/kansas-batboy-kaiser-carlile-death/index.html
