Mark Broadie is the Carson Family Professor of Business at Columbia Business School. He is a member of the USGA Handicap Research Team and the inventor of the Strokes Gained Data Analytics system used on The PGA TOUR. Broadie is also a writer and published author and he joins "On the Mark" to share Strokes Gained insights and tips on how you can lower your scores. Broadie delves into improved play off the tee by understanding shot patterns, shot selection in the iron game for better distance control, greenside proficiency and focus and putting from distance and from short range.