Phil plays a Callaway Chrome Soft x, and others play the Pro V1 & Pro V1x on tour. Are they the same as what we buy in a Pro Shop or the various golf stores? In the late 60's I caddie for Rod Funseth in the 68 Hawaiian Open. He had 6 dozen Titleist 90 compression balata balls in his locker Tuesday morning prior to the practice round for the Tournament. He told me his balls had tighter quality and were between 88 - 92 compression. He said the commercial line of Titleist 90 compression that I buy were not as tight compression wise. Now that solid ball are what we play, does the various manufacturers provide better quality balls for the Pro's than we buy/play?