Prior to Owens: Grayson played his prep ball at McKeesport High School under head coach, Gerald Grayson. He was a First Team All-Conference Selection, as well as, a First Team All-Section team member as well. He has the most three point baskets made in a season, in a career, and in a game records at his high school.
Personal: His father is Jamie Grayson and his mother is Vanetta Brown, who is a social worker. He has four siblings: Jamie, Javon, John, and Vamier.