Three different kinds of recycled rubbers were blended with a butadiene rubber with the ratio of 6 to 4 and measured their properties. The three rubbers prepared from different particle sizes seemed to have no effect on various properties of ball. Two different processes, however, for ball making were found to be critical for the diameter and degree of deformation of ball. A curing process with a quenching system was determined to provide a higher stability in both size and deformation of ball than the one without cooling.