Master Club Fitter and Equipment Technician with 15 years of experience in the golf industry. Expert in club building, shaft profiles, and optimizing gear for amateur swing speeds.
Derek "Doc" Sullivan is a certified Master Fitter who has worked with major OEMs and boutique club builders. He possesses an encyclopedic knowledge of golf equipment, from the metallurgy of forged irons to the aerodynamics of modern drivers. His writing demystifies marketing jargon, helping golfers understand the real differences between cast and forged, graphite and steel, and urethane and surlyn. He provides data-driven advice on gapping, bounce selection, and the critical importance of lie angles. Derek's goal is to ensure every player's equipment matches their unique swing DNA to maximize performance.