GAM’s Policy On the New USGA Rule on Grooves
The USGA has implemented its new Rule on grooves as of January 1, 2010, beginning with the U. S. Open, the U.S. Women’s Open, and the U.S. Senior Open and their sectional (final stage) qualifying events. The USGA will adopt the new Rule for U.S. Open local qualifying in 2011. The USGA intends to implement the new Rule for its amateur championships no later than 2014.
The USGA further recommends that state golf associations follow these time guidelines, but says that if a state implements the new Rule in 2014, it should be only done for competitions involving expert players (such as the Michigan Amateur.) At this time, GAM tournaments will not be subject to the USGA groove rule.