Mar 01, 2013, 10.32 PM | Source: Reuters
GOLF-MCILROY-WALKS-OFF-COURSE-AFTER-DROPPING:McIlroy walks off course after dropping seven shots
The Northern Irishman did not appear to be injured, telling reporters in the parking lot that "I'm not in a great place mentally. I can't really say much, guys. I'm just in a bad place mentally," ESPN.com reported.
The PGA Tour said McIlroy cited "wisdom tooth pain" as the reason for his withdrawal.
McIlroy shot an even-par 70 on Thursday in the opening round at PGA National before a triple bogey, a double bogey and two pars on Friday morning.
After hitting his approach shot into the water on the 18th, his ninth hole of the day, McIlroy walked off the course with his coach and caddie.
(Reporting by Gene Cherry in Salvo, North Carolina; Editing by John Mehaffey)