It was the name of the game about five years ago, thanks to square drivers, perimeter weighting, and a USGA restriction on the industry's previous CoR and clubhead inroads. MOI was capped eventually, but even before hitting the max the OEMs turned away en masse. We haven't seen anything quite so boxy in a while, and objectives seem to have turned. Companies got sidetracked towards adjustable hosels, colorful crowns, and innovative aerodynamics.
But it's back. Ever since Karsten Solheim designed the original Anser putter way back when, the golf industry has been trying to find new and creative ways to distribute weight to the edges of the clubhead. Not just with putters, but with cavityback irons and woods as well. Until now they had to resort to odd shapes (namely, squares or triangles) or heavier tungsten inserts.
Nike says the Covert, and its rear cavity, has changed the game. Let's take a look.