Star-Ledger Answers Ball Rollback Question!
/Jenny Vrentas of the Newark Star-Ledger profiles Dick Rugge, USGA testing and offers this on how a ball rollback could work...sure sounds easier than the groove rule change!
At the beginning of the decade, professionals on tour converted from wound balls to the solid-core, multi-layer models that reign today. Another way to drop maximum driving distance is to change the polymers that make up these interior layers. Doing so affects something called the coefficient of restitution, which is a measure of how well the energy from the swing is transferred to the ball. A higher coefficient means more energy is transferred and the ball travels farther. But the composition of the polymers can be modified for a less efficient energy transfer and shorter maximum driving distance.