The thing to understand is, in golf, if you think someone was first with that idea, someone probably beat them to it. One thing you will start to hear more of in the immediate future will be adjustable clubs where the shafts can be threaded into a head. Well, guess what? Screw-in shafts were done as far back as the 1900’s if you ask. That may give you a little hint to some of the following questions.
1. What decade was the first cavity back iron introduced?