As players on the PGA Tour started using 20 year old Ping Eye2 Wedges I started thinking about how much (or little) technology has effected equipment in the last two decades. The facts are: Other than changes in the golfball, driver and the invention of hybrids very, very little has changed. Excluding the advent of perimeter weighting (which is very similar to toe/heel weighting) when it comes to irons there have been no groundbreaking upgrades. Wedges are the same and fairway woods are just like they used to be - in fact, the better ones look just like the really old ones. The driver has been the primary club in the bag for technological advancement. And with this progress has come an entirely new language. What does MoI mean? What is Cor? Whaaat....? Here is a brief primer, compliments of my friend Ian Hayes, on some new driver terminology: