Late Dallas Cowboys DE Marshawn Kneeland diagnosed with CTE

Researchers at Boston University have diagnosed former Dallas Cowboys defensive end Marshawn Kneeland with CTE.Marshawn Kneeland’s DeathKneeland died by suicide at the age of 24 in November 2025.According to a report released by the Texas Department of Public Safety, troopers attempted to stop his vehicle around 10:30 p.m. for a traffic violation on the Dallas North Tollway near Keller Springs Boulevard.Kneeland allegedly refused to stop, leading to a police pursuit.Videos from the North Texas Tollway Authority show a trooper chasing a speeding car. But investigators said the trooper ultimately lost sight of the vehicle and ended the pursuit. The vehicle was later found abandoned after being involved in a crash near The Star in Frisco, and police searched that area.During the search, officers were told Kneeland had expressed "suicidal ideations." Kneeland was found just after 1:30 a.m. with an apparent self-inflicted gunshot wound. What is CTE?CTE, or chronic traumatic encephalopathy,