After Rory McIlroy's poor performance at the PGA Championship this weekend, all anyone could talk about was the fact he was forced to change his driver after it was deemed non-conforming following a test before the year's second major teed off.

Kerry Haigh, the chief officer for championships in the PGA, pointed out that the USGA does not want to get involved in whose driver is not in accordance with the rules.

Rory McIlroy's PGA Championship performance overshadowed by driver controversy. USGA's non-conforming ruling led to equipment changes for several golfers.

Heading into the weekend, it was reported that McIlroy had to switch out his driver because his regular driver was deemed non-conforming to USGA standards. While the PGA and USGA dismissed that anything nefarious was behind a non-conforming test result, McIlroy's absence for four consecutive days of media was not a great look for him.

The USGA tested Rory McIlroy's driver and concluded that it did not meet established standards, forcing him to change it before the PGA Championship.

From the pristine fairways and lighting fast greens to the punishing bunkers and club-twisting rough, Oakmont Country Club is one of the toughest tests for even the world’s best golfers, who will descend upon Western Pennsylvania for the 125th U.

A day late, the PGA of America finally issued a statement about Rory McIlroy’s driver being deemed “non-conforming’’ following a random check.

Rory McIlroy had to switch drivers ahead of the first round of the PGA Championship after his gamer was deemed non-conforming, according to a report by SiriusXM PGA Tour Radio. McIlroy is known as the best driver of the golf ball of his generation.