Before Union: Mangrum prepped at Fairview High School were he lettered four years in golf with coach Kevin Sizemore. He was named MVP of the team in both his junior and senior seasons. As a freshman, Mangrum was named Most Improved. He posted scoring averages of 36.9 as a junior and 37.2 as a senior. Mangrum advanced to the regional tournament in each of his four seasons at Fairview. Mangrum was successful in the classroom as well, posting a 3.84 GPA and being a member of the Beta Club.
2/1/2007 - Union Golf Signs Fairview Standout for 2007-08 Season