Under Armstrong, Utah won 13 conference championships, seven in the Rocky Mountain Conference and six in the Mountain States / Skyline Six Conference. Armstrong's 25-year tenure is the longest of any Utah Utes football head coach and his 141 wins are the second most in program history. Armstrong also coached Utah's basketball and track teams and served as the school's athletic director.
Under Armstrong, Utah achieved a significant number of conference championships: seven in the Rocky Mountain Conference and six in the Mountain States/Skyline Six Conference. His 25-year coaching tenure is the longest for any Utah Utes football head coach, with his 141 wins ranking second on the program's all-time list. Armstrong also coached basketball and track at Utah and held the position of athletic director.