Patent ID: 7905797

Claim:
A set of iron-type golf clubs, comprising: at least one long iron-type club with a face having a first groove formed therein, said first groove having a first cross-sectional area; at least one middle iron-type club with a face having a second groove formed therein, said second groove having a second cross-sectional area; and at least one short iron-type club with a face having a third groove formed therein, said third groove having a third cross-sectional area; wherein: said first, second, and third cross-sectional areas are different; and said cross-sectional areas are measured in a vertical plane substantially perpendicular to a sole of the respective club head and passing through a center of gravity of the respective club head, wherein at least one of said grooves has a longitudinal axis and is radiused at toe and heel portions thereof about an axis of rotation that is perpendicular to said longitudinal axis and parallel to the face.