Unambiguous' evidence of CTE found in an autopsy of Shane Tamura, the former SoCal football player who was targeting the NFL when he killed four, then himself, in NYC.

The degenerative brain disease that has besieged the National Football League for two decades with a billion-dollar lawsuit, congressional hearings, an A-list movie and an unrelenting cortege of ex-players’ obituaries intruded on America's favorite sport in the most violent manner yet when a gunman who turned out to have the disease

Dr. Jonathan Cherry, the corresponding author on the study and director of the digital pathology core at the BU CTE Center, said the study’s results “have the potential to significantly change how we view contact sports.”