It is a metric in golf that quantifies the efficiency of energy transfer from the clubhead to the ball at impact. It’s calculated by dividing ball speed by clubhead speed. For example, if a golfer swings the club at 100 mph and the ball leaves the clubface at 150 mph, the value would be 1.50.
This value is a significant indicator of the quality of the strike. A higher value suggests a more efficient transfer of energy, resulting in greater distance and improved consistency. Historically, improvements in equipment technology, particularly in clubface design, have aimed to maximize this energy transfer, allowing golfers to achieve better results with the same swing speed.
