A missing Ohio State University football player was found dead in a dumpster from a self-inflicted gunshot wound, police said Sunday. Kosta Karageorge went missing Wednesday afternoon after he told his roommates he was going for a walk. (He didn’t show up for practice later that day.) Karageorge played one season on the football team and wrestled for three years. The Karageorge family said their son had a history of concussions, and suffered one as recently as a month ago. Its unknown what role concussions may have in suicides of athletes, but several retired professional football players, most notably Junior Seau, committed suicide after struggling with concussion-related brain trauma.