`` The estimates are around 1,000 or more hits for a lineman every season . '' Scientists confirmed that ex - defensive lineman had a brain injury linked to concussion . They believe the battering Shane ##ll took could explain his brain 's damage . His family reported troubling personality changes before his death .
Scientists confirmed that ex - defensive lineman had a brain injury linked to concussion . They believe the battering Shane ##ll took could explain his brain 's damage . His family reported troubling personality changes before his death .