Don Gregory Graham; Born May 19, 1955; Hometown: Louisville, Ohio; Alma Mater: University of Oregon (BS, 1978) / University of Dayton (M.Ed, 1982) Graduated from Louisville HS (OH) then played basketball for head coach Dick Harter at Oregon; First coaching roles were as an assistant at Marist Catholic HS (OR) and as head coach at his alma mater, Louisville HS Gregory Lawrence Graham is a retired American professional basketball player who played five seasons in the National Basketball Association. After 12 years apart, Greg Graham reunited with his former teammate and boss, Ernie Kent, and now spent three seasons as an assistant men’s basketball coach at Washington State University (2014-15, 2015-16 and 2016-17). He is a former head men's basketball coach at Boise State University. Greg Graham resigned from his post as Warren Central basketball coach on Thursday afternoon after seven seasons at the school. Greg Graham resigned from his post as Warren Central High School basketball coach on Thursday afternoon after seven seasons at the school. Graham, a 1989 Indiana Don Gregory Graham is an American college basketball coach. Graham spent 10 years as an assistant coach for Kent, first at Saint Mary’s (1992-97) and then at Oregon (1997-2002). At the risk of using a basketball metaphor, Barrington High may have buried an NBA-range three-point shot when it recently hired Greg Graham to coach its boys’ basketball team. Greg Graham Facts.