Photo: Golfer Ken Green holds his then-3-month-old son Hunter, Jan. 20, 1989 in Scottsdale, Arizona. "I think he may have committed suicide," a friend of the decedent told the 911 dispatcher.

Hunter Green had one of the best seasons of any University of Northern Colorado football player last year. Green’s honors were noteworthy, even on a team that didn’t win a game. Yet, Green didn’t use ...