Other Ping models, which do not have square grooves, are the most popular irons on the market today.

The square grooves have tended to reduce the premium for hitting the ball in the fairway.

Nicklaus began using square grooves as a defensive action, as did many purists of the game.

A consensus of players at recent player meetings seemed to support the prohibiting of square grooves.

The square groove was introduced with the Ping Eye 2.

"We cannot be making the rules," said Watson who has strongly opposed square grooves.

And even public disputes have been few and focused on unsensational issues such as square grooves.

Today, square grooves are considered perfectly legal under the Rules of Golf.

Hammer with light steady blows to cut a square groove, not a V-shaped one, about three-quarters of an inch deep.

I still use the same steel-shafted clubs, the same putter and no square grooves.