McGinley noticed something about putting that the industry had quietly ignored for over a century.

In 95% of putters on the market, most of the head weight sits behind the shaft axis. Here’s what that actually means in practice: the moment you take the putter back, that rear weight pulls the face open. On the way through, the face has to rotate back to square at precisely the right moment — the exact moment of impact — to send the ball where you’re aiming. Miss that window by a single degree and the putt goes right. Or left. Or lips out when it had no business doing so.

McGinley calls this face drift. It’s the reason you three-putt holes you have no business three-putting. It’s not your read. It’s not your nerves. It’s physics working against you every time you stroke the ball.

For 125 years, the industry’s answer has been to practice more. Another hour on the putting green. Another lesson. Another mallet with another marketing campaign full of words like “forgiveness” and “MOI.” Words that sound like solutions and aren’t.

McGinley went back to the engineering question: what’s actually causing this?

Gravity pulls the face open. So gravity should be able to hold it square.

He flipped the weight.

In the RS1, 75% of the 360-gram head weight sits in front of the shaft axis. Not behind it. In front of it. The result is a putter where gravity works with your stroke instead of against it — actively holding the face square through the entire arc. You don’t have to time the release. You don’t have to rotate your hands. You don’t have to manufacture a feel on a four-footer with money on the line.

You just pull it back. Let it fall. The physics take care of the rest.