Rory McIlroy had to switch out his driver ahead of the PGA Championship.
McIlroy’s regular driver was tested and deemed to be nonconforming after he arrived at Quail Hollow earlier this week ahead of the second major championship of the year, according to Sirius XM PGA Tour Radio’s Jason Sobel.
Further specifics on McIlroy’s driver or why it was deemed nonconforming are not yet known.
The issue, though, is a common one on the PGA Tour. Clubs fail these tests, which are conducted regularly by the USGA at Tour events, each week throughout the season for a number of reasons.