As the co-founder of The Minikahda Golf Club in Minneapolis, Jaffray left his mark in Minnesota golf. Bringing to life the first permanent golf course in Minneapolis, and serving on the executive committee of the USGA and as president of the MGA, Jaffray was very involved in the game. He was also a player, becoming the first club champion at the Town and Country Club of St. Paul (1898) and The Minikahda Golf Club (1899). Jaffray was also the Minnesota State Amateur Champion in 1906.
