Former New England Patriots and Denver Broncos receiver Demaryius Thomas was diagnosed with Stage 2 CTE at the time of his death at 33 years old, according to doctors from Boston University. Thomas was also managing seizures, a condition unrelated to his CTE symptoms, according to The New York Times. Doctors believe he likely died after a seizure on December 2021, according to The Times.
Thomas played in the NFL for 10 seasons, with time spent on the Denver Broncos (2010–2018), Houston Texans (2018), New England Patriots (2019) and New York Jets (2019). He won Super Bowl 50 with the Broncos and made four Pro Bowls.