Patent ID: 6932718

Claim:
A hollow golf club head made of metal, comprising: a face portion; a sole portion; a side portion; a crown portion; and a plate piece made of metal and fixedly attached to an internal surface of the golf club head on a toe side of the sole portion so that one surface thereof is in tight contact with the sole portion, wherein the following formula is satisfied: 0.3≦ a/b ≦0.5 0.25≦ c/d ≦0.45 where a denotes a distance in a direction of a target line between the foremost portion of the golf club head and a center of the plate piece; b denotes the maximum width of the golf club head; c denotes a distance in a direction perpendicular to the target line between a toe-side tip end position of the golf club head and the center of the plate piece; and d denotes a distance in the direction perpendicular to the target line between the toe portion and an intersection p between an elongation of the shaft axis and a bottom surface of the sole portion.