According to a report, the Masters champion had his regular driver deemed non-conforming Tuesday and had to put a backup in play at Quail Hollow.

Rory McIlroy and Scottie Scheffler start well in round two - Rory McIlroy must shoot a low score to fight back into contention after a three-over-par 74 in the first round of the PGA Championship at Q

Rory McIlroy's opening round at the PGA Championship was a far cry from his triumph at The Masters last month, with the Northern Irishman struggling to a three-over-par round of 74