LOUISVILLE, Ky. (AP) A glance at Thursday's opening round of the PGA Championship, played at 7,458-yard, par-71 Valhalla Golf Club (all times EDT):
Leading: Lee Westwood, Kevin Chappell and Ryan Palmer were tied at 6-under 65.
Pursuing: Five players were tied at 66, highlighted by three-time major winner Rory McIlroy.
Tracking Tiger: Woods, back in the field after a bad back limited his practice time, shot 3-over 74.
Key stat: Eight players shot 66 or better.
Noteworthy: Defending champion Jason Dufner (neck) and Matt Kuchar (back) pulled out of the tournament because of injuries. Both were on course to qualify for the U.S. Ryder Cup team, potentially leaving captain Tom Watson with some big shoes to fill.
Quoteworthy: ''I didn't play as well as I wanted to. I didn't get a putt to the hole. That's not a good combo.'' - Woods.
Key tee times: 8:35 a.m. (Eastern) - Bubba Watson, United States; Martin Kaymer, Germany; Rory McIlroy, Northern Ireland; 1:25 p.m. - Jordan Spieth, United States; Adam Scott, Australia; Lee Westwood, England; 1:45 p.m. - Padraig Harrington, Ireland; Phil Mickelson, United States; Tiger Woods, United States.