Marshawn Kneeland's family has some heartbreaking news to share, and they're doing it to help others. The former Dallas Cowboys defensive end, who died by suicide in November 2025 at just 24, has been posthumously diagnosed with stage 1 CTE (chronic traumatic encephalopathy).

Marshawn Kneeland's family said his posthumous CTE diagnosis provides \

Dallas Cowboys defensive end Marshawn Kneeland tragically took his own life in 2025, and we now know more about his struggles.