One landed in a creek. Another sent the gallery scrambling. Yet another rolled into a fenced-off area where fans can use cellphones, a good 30 yards right of the fairway.
Too bad Woods couldn't call for help.
"I didn't play as well as I wanted to. I didn't get a putt to the hole," he said. "That's not a good combo."
Lee Westwood, shooting his best score ever at the PGA Championship, and little-known Kevin Chappell both posted 65s to leave Woods nine shots off the lead. Jim Furyk and Edoardo Molinari were one stroke back after shooting 66.
Woods' main objective Friday will be making the cut, though he insisted he still has a chance to capture his 15th major title.
"I just don't see, on this golf course, guys going super low here," he said, apparently not having seen the scoreboard. "I've got to get to under par by the end of tomorrow. ... If I can get under par for two rounds, that's going to be right in the ballgame."
McIlroy, coming off wins at the British Open and at Firestone, teed off shortly after Woods finished up.
Woods didn't arrive at Valhalla until Wednesday, having been in Florida undergoing treatment for a back injury that forced him to withdraw at Firestone on Sunday. He struggled to pick up his tee or change his shoes, but insisted that he was fit by the time he got to Kentucky.
"It's a little bit stiff," he said of his back, "but that's about it."
Still, Woods was playing just his 11th competitive round since undergoing back surgery March 31. The rustiness showed as he grappled with his swing and never figured out the speed of the greens.
Woods had to sit out the first two majors of the year and posted his worst 72-hole finish in a major at the British Open.
Looks like more of the same at the PGA.
"My swing was dialed in on the range," Woods said. "Unfortunately, I just didn't carry it to the golf course."
Westwood carried over the momentum from a closing 63 at Firestone, his best round of the year. The 41-year-old Englishman made nine birdies helping offset a double-bogey and eclipsed his best round in 17 PGA appearances, a 66 on the first day at Oak Hill in 2013.
"The golf course was all there in front of me. I just play it as I see it," said Westwood, who's had numerous close calls but never won a major championship. "Last week, I felt like I turned a corner."
Chappell, a 28-year-old Californian in his fourth year on the PGA Tour, turned in a bogey-free round. The final major of the year has produced some unlikely champions remember Shaun Micheel? and Chappell hopes to be the latest.
"I can't complain about being in the lead of any golf tournament," said Chappell, whose only professional win came on the Web.com Tour in 2010. "I just look forward to keeping it rolling."
Furyk is off to another strong start in a tournament he nearly won in 2013.
He took a lead to the final day at Oak Hill, only to lose to Jason Dufner by two strokes.
Phil Mickelson, mired in his longest winless streak since 2003, was paired with Woods for one of the rare times at a major. Lefty was 1 over midway through his round, struggling just like his playing partner, but fought back on the second nine for a 69.
Woods needs a similar turnaround Friday.
Starting on the back side, he bogeyed both of the par-3s after missing the green, though he did salvage an unlikely birdie at the 16th by holing out a wedge from more than 100 feet away.
Woods missed a chance to make up more ground at the easy 18th, knocking his drive into a fairway bunker at the par-5 hole, and things really took a turn for the worse after the turn.
He just couldn't find any accuracy off the tee.
Woods drove into ankle-deep grass marked as a hazard, leading to a bogey. Then came another poor drive at the second, the ball settling in a creek left of the fairway, leading to a one-stroke penalty and another bogey.
"Oh, for ... sake, Tiger!" he yelled at himself after the tee shot, muttering an obscenity.
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