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 suffered an unfortunate break right before the PGA Championship when he learned the driver he planned to use in the tournament was deemed "no longer permissible" and he was forced to make a change.