Patent ID: 7273427

Claim:
A method for selecting a golf club suitable for a golfer, comprising the steps of: (a) obtaining at least one of head speed and hit-ball data when a golfer hits a golf ball with a golf club; (b) automatically calculating ideal hit-ball data of the golfer on the basis of the at least one of head speed and hit-ball data obtained in step (a); and (c) selecting a golf club suitable for the golfer on the basis of the ideal hit-ball data obtained in step (b), wherein: in the step (a), at least the head speed is obtained, and the ideal hit-ball data includes ideal initial velocity, ideal launch angle and ideal backspin, which are calculated in accordance with the following expressions: the ideal initial velocity=F×head speed+G; the ideal launch angle=H×head speed+I; and the ideal back spin=J×head speed+K, wherein F is a coefficient in a range of 1.3 to 1.5, G is a constant in a range of −0.5 to 0.5, H is a coefficient in a range of −0.3 to −0.2, I is a constant in a range of 25 to 31, J is a coefficient in a range of −50 to −30 and K is a constant in a range of 3700 to 5100.