 He proceeded to miss upcoming football practices and finally the Ohio State game against rival University of Michigan, raising concerns about his welfare.As an athlete, he experienced 15 reported concussions; however, he is suspected of having experienced many more than 15, especially considering his history of concussions before college.Controversy over his suicide from a self-inflicted gunshot wound on November 30, 2014 as a possible result from chronic traumatic encephalopathy (CTE) became apparent in June 2016 after a New York Times article found that samples of his brain did in fact show signs of stage 1 CTE after examination by Dr. Ann McKee, a Boston University neuropathologist at the Brain Bank, in conflict with the original findings from coroner Dr. Anahi Ortiz in consultation with Ohio State University's Dr. Norman Lehman.