The Mizuno Pro S-1 irons offer a pure muscleback design with refined feel, stability, and tour-inspired shaping.

What you need to know: Aimed at the discerning better player, the Mizuno Pro S-1 is a single-piece forged muscleback blade. However, it is more than just a hunk of metal on a stick. The channel in ...

While it won't command the market attention of whatever the next hot game-improvement iron happens to be, the launch of the S ...