USGA sharpens its case against U grooves
If the latest research by the U.S. Golf Association is any indication, the rules governing the design of grooves on iron and wedge faces are about to change. And do not expect them to get more lenient.
The U.S. Golf Association's final report of its nearly two-year-long study of grooves (in conjunction with the Royal and Ancient Golf Club) confirms its preliminary findings, namely that the U-shaped grooves on iron and wedge faces have a significant spin generation advantage over V-shaped ...
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