PGA Tour Players record their Mizuno Swing DNA

PGA Tour players Luke Donald, Keith Mitchell, Ben Griffin and UA-camr Remec Carlson (CEO of golf) each hit Mizuno's Shaft Optimizer to find their latest Mizuno Swing DNA numbers - and see if the iron shafts it recommends are the ones they identified through years of testing. More on Mizuno's Swing DNA custom fitting system at mizunogolf.com...