U.S. Senior Open
In Sectional Qualifying and in the Championship proper, the player’s clubs must conform to the groove specifications in the Rules of Golf effective January 2, 2010. Note: Ping EYE@ clubs manufactured prior to April 1990 may not be used during Sectional qualifying and the Championship proper. The Condition of Competition is for review on the entry application.

The USGA and R&A have created a reference resource call the Informational Club Database to assist golfers in determining whether their irons, hybrids and fairway woods comply with the New Groove Rules. For information about and to access the database, please use the following link: http://www.usga.org/InfoClubsDB/intro.html. additionally, for information regarding the conformance status of clubs not listed, please contact the USGA Research and Test Center at (908) 234-2300.

Player Club Testing is available for the 2011 U.S. Open, U.S. women’s Open and U.S. Senior Open Championships. Please use the following link: http://www.usga.org/equipment/testing/submission_process/Checking-Clubs-for-Conformance-to-the-New-Groove-Rules(2)/ for more information.

The USGA strongly suggests that all players verify the conformance of their clubs well in advance of their scheduled qualifying competition. It is the player’s responsibility, not the USGA’s responsibility to ensure that his clubs conform. Waiting until the day of the competition is the fault of the player. The Committee is under no obligation to test the club. The competitor may play. However, if it is later determined that the club is non-conforming, including after the competition is closed, the player will be disqualified.