Send us Fan Mail We sit down with JumboMax Grips founder John Mazzanoble and make the case that the handle is a performance part, not a comfort accessory. We talk tour level fittings, why diameter and weight change sequencing and face control, and how to use data to find a grip that helps you hit more fairways and greens. • how Sergio Garcia and Jason Day landed on their specs • why grip fitting should be numbers first, not just feel • how grip size can improve face awarenes...