Rory McIlroy left the PGA Championship without a single word to the media on Sunday, leaving the golf world none the wiser as to the details of the reported failure of his driver to pass a conforming test earlier in the week.

Rory McIlroy's PGA Championship campaign ended in disappointment as the Northern Irishman finished tied for 47th with three over par at Quail Hollow. The underwhelming performance came just a month after his triumphant Masters victory at Augusta,