DUBLIN, Ohio — Tiger Woods got off to a slower start than he would have liked Thursday at the Memorial.

That had more do with a stopwatch than a scorecard.

Ryan Moore opened with five birdies in seven holes and never missed a fairway after the first one, posting a 7-under 65 for his best start in his 14th appearance at Muirfield Village. He was one shot ahead of Jordan Spieth, who chipped in for birdie, chipped in for par and holed a 35-foot eagle putt.

Woods made a pair of late birdies to salvage a 70 in his first round since missing the cut at the PGA Championship. He played his back nine in a foursome with Bryson DeChambeau, Justin Rose and a rules official in a cart timing them because they were so far out of position.

“We were on the clock most of the back nine,” Woods said. “That made things a little more complicated.”

Getting caught up wasn’t easy with various tee shots in water hazards, though it was obvious how far behind they were.

Spieth, Rory McIlroy and Justin Thomas were in the group ahead of them, and McIlroy hit his tee shot on the par-4 second into a backyard. With no official nearby, he had to walk 300 yards back to the tee to hit again. That took time. Still, walking off the fourth green, the group of Woods, DeChambeau and Rose still had not reached the third tee.

DeChambeau, who considers such variables as air density and elevation change in his pre-shot routine, went over his allotted time on No. 5 and was given a warning for a bad time. He made birdie, took double bogey from a fairway bunker on the next hole and began his title defense with a 74.

He was frustrated by being on the clock, and by not getting through to the PGA Tour on how to measure pace of play.

“The time to hurry is in between shots. It’s not the shot,” DeChambeau said.

BROADCASTING: Swing coach Hank Haney was suspended from the SiriusXM PGA Tour Radio channel because of saying on his show that a Korean would probably win the U.S. Women’s Open and that he couldn’t name six players on the LPGA Tour.

He then said he would go with “Lee” and if he didn’t have to mention a first name, “I’d get a bunch of them right.”