'Scrappy' Rory McIlroy happy with 66 to open PGA Championship

(Photo credit: Jeff Faughender-USA TODAY Sports)
LOUISVILLE, Ky. -- An opening round of 66 put Rory McIlroy three shots back of the lead at the PGA Championship at Valhalla Golf Course and he hit the clubhouse on Thursday in a defensive mood.

The 2014 PGA Championship winner on these same grounds, McIlroy was suggestively queried about leaving "a few out there," insinuating his 5-under-par first round could've been bette