Former Philadelphia Eagles star defensive back Andre Waters was known as a fierce tackler during his 12 seasons. By the time he retired in 1995, he had racked up hundreds of tackles but had also sustained numerous concussions.

After his playing days were over, he was reported to be suffering from depression. And in 2006, at age 44, he committed suicide with a gunshot to his head. According to forensic pathologist Bennet Omalu of the University of Pittsburgh, an autopsy after his death