GULLANE, Scotland

A blue sky and a gentle breeze usually means ripe scoring conditions at the British Open. Just not on the brown links of Muirfield.

Zach Johnson handled it better than anyone Thursday. Helped along by a 45-foot eagle putt and only one bogey despite trouble lurking around every pot bunker, Johnson had a 5-under 66 for a one-shot lead, the first time he’s been atop the leaderboard at any major since he rallied to win the Masters six years ago.

Tiger Woods more than survived the late end of the draw, after the sun had thoroughly baked out the crispy greens and allowed only eight of the 20 rounds under par. He knocked one putt clear off the green, but 10 one-putts — most of them for pars — carried him to a 69, a good start in his bid to end his five-year drought in the majors.

“The golf course progressively got more dried out and more difficult as we played,” Woods said. “And I’m very pleased to shoot anything even par or better.”

And for all the talk about Muirfield’s men-only membership, at least the club doesn’t discriminate against age.

Mark O’Meara, the 56-yearold who won his claret jug in 1998 at Royal Birkdale, shot a 67 and nearly tied Johnson for the lead until his 25-foot birdie putt on the 18th took a hard spin out of the cup. Another former champion, 54-year-old Tom Lehman, opened with a 68.

It was an eclectic group who broke par, from major champions to players making their British Open debut. What they all had in common was finding a way to get through a firm, fast and frightening test at Muirfield that figures to get even harder if the Royal & Ancient doesn’t put some water on the links course.

Phil Mickelson opened with a 69 and felt like he got off easy by playing in the morning. Mickelson was concerned about some hole locations being too close to the edge of slopes, and he pleaded with the R&A to let go of its ego and “just set the course up the way the best players can win.”

Rafael Cabrera-Bello of Spain joined O’Meara at 67, while the group at 68 included Dustin Johnson and Brandt Snedeker, who each have contended on Sunday over the last two years in the Open. Two-time major champion Angel Cabrera, who lost in a playoff at the Masters in April, and 19-year-old Jordan Spieth were in the group at 69.

It was a beautiful day along the Firth of Forth. And it was hard work.

No one felt safe until the ball stopped bouncing along the crusty fairways, and no one was sure when that would happen.

O’Meara thought he hit a reasonable bunker shot on the 15th until it kept rolling — and rolling — off the green and into another bunker.

Rory McIlroy never looked comfortable, and it caught up with him. After missing left of the 12th green, he chipped it up the slope and watched it roll back down to his feet. His next chip was long and he wound up with double bogey. On the 15th hole, his putt to the back pin rolled well past the hole and into a bunker for another double bogey. A bogey-bogey finish gave him a 79, his highest score at the Open since that 80 in the vicious wind of St. Andrews in 2010.