McIlroy opened his campaign at Quail Hollow with a disappointing three-over-par 74. Despite beginning with a birdie on his first hole, the par-five 10th, the Northern Irishman struggled to find rhythm.

XM Sirius PGA Tour Radio is reporting Rory McIlroy’s driver was deemed to be nonconforming at the PGA Championship

McIlroy’s driver was reportedly ruled non-conforming on Tuesday at the PGA Championship, and three days later McIlroy had hit just 10 fairways through 36 holes.