Mizuno JPX919 Tour irons summary with R&D
Replacing the JPX900 Tour - an iron with 3 majors to its name in 2 seasons was the toughest of all tasks for Mizuno's R&D team. Chris Voshall explains how they approached the task. More on the JPX919 Tour at https://golf.mizunoeurope.com/golf-clubs/jpx919-series/jpx919-tour/
