This paper designs a novel measurement procedure that relates the size of the hand and the size of the ball. This procedure was devised in order to determine the "Hand Coverage Index of Porras, Oliver, Sosa" (H.C.I.P.O.S.) on the ball. Using three measurements obtained from the dominant hand of athletes with the hand on its maximum aperture taken on a flat plane, we calculated their coordinates in space, and their applications on the sphere of the ball. Subsequently, through a formula, and taking into account the central value of the measurement of the circumference of the ball and the corresponding sport category, we will be able to know the Hand Coverage Index of the athlete over the ball, or the surface of the ball that an athlete is able to cover with his fully open hand with respect to the the sphere of the ball of his sport category.
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