His only bogey came at the 10th but he made amends with an eagle at the par-five 17th.
She needed an eagle at the par-5 final hole but had to settle for par.
To be called the Preserve, it is a par-three course with only 13 holes.
Woods mixed six birdies with two dropped shots and a double-bogey at the par-three fourth.
His par-saving putt on the fourth hole elicited roars, his birdie putt on 13 yelps.
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My round--and what's left of my pride--rests on our third hole, a 399-yard par-4.
The par-72 inland links-style County Kildare layout measures 7, 301 yards and was only opened in 2003.
The first came on the par-five second hole Sunday, when Oosthuizen scored a rare double-eagle.
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At the 13th hole , a 340-yard par-four, dogleg left, we get serious about golf again.
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The 17th, a short par-five at 522 yards, ranks as the easiest hole at Olympic.
But as a rare, true three-shot par-five, it can easily peel off the weak of heart.
The highlight of Mickelson's round was a 21-foot eagle putt at the par-five fifth hole.
He then parred the par-five 18th after running just through the green with his approach.
The view from the tee of the 223-yard, par-three 17th hole, for instance, is pure intimidation.
She also made six par-saving putts of 5-6 feet in matching the best round of the day.
She moved into a share of the lead on the par-5 third, rolling in a 6-foot eagle.
Both men hit fine shots to the closing par-four hole, with Watney's putt coming up agonizingly short.
The dramatic par-four 18th, with its famous green beneath the clubhouse, is uphill but only 344 yards.
The par-five 16th, at 670 yards the longest hole in Open history, is not a birdie hole.
He bogeyed the par-four 10th to fall to 14 under, alongside Goydos, one under for the day.
Guan had a bogey at the par-3 second after his tee shot off the back of the green.
The best action Saturday was during the rain delay when Garcia was asked about the par-5 second hole.
Garcia, who started with a one-shot lead over Woods, was in the fairway on the par-5 second hole.
Early reviews of the course, a par-74 stretching to 6, 545 yards, declared it superior to anything at Pinehurst.
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Moments later, Stanford rolled in an eagle putt on the par-5 15th to also get to minus 10.
Woods' score could have been even better had he not dropped two strokes at the par-four 18th hole.
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Four more bogeys followed in the next six holes before he steadied the ship with a par-birdie-par finish.
My second shot travels 10 yards, a useful gain on a football field but not on a par-five.
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