Dan Grayson
Dan Grayson (1967-Aug. 1, 2021) was a former American football linebacker who played one season with the Saskatchewan Roughriders of the Canadian Football League. He was drafted by the Pittsburgh Steelers in the seventh round of the 1990 NFL Draft. He played college football at Washington State University, where he was a 1st Team All-Pac-10 selection at linebacker in 1989. Due to his behavioral difficulties and change in personality, Grayson believed he had chronic traumatic encephalopathy from his football career and donated his brain to science.