The highlight of Mickelson's round was a 21-foot eagle putt at the par-five fifth hole.
Moments later, Stanford rolled in an eagle putt on the par-5 15th to also get to minus 10.
Wales went top of the leaderboard when Dredge sank a 25-foot eagle putt from just off the 15th green.
He narrowly missed a 24-foot eagle putt in front of a surging gallery on the 18th after reaching the par 5 in two shots.
South Korea's Jin Jeong finished as the leading amateur on four-under-par, closing out his tournament by holing a spectacular eagle putt on the 18th.
"I had an eagle putt on the 18th to be seven under for the nine and said to my caddy I really fancied the 59, " admitted Houston.
But he birdied the 13th and 14th and made an eagle putt of nearly 20 feet on the long 16th to climb into a tie for sixth spot.
He missed the ensuing 30-foot eagle putt but made birdie.
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World number 10 Casey began the day six under but picked up five shots on the front nine, narrowly missing with an eagle putt after driving the ninth green.
He narrowly missed the eagle putt which would have seen him return a level par 72, but at four-under 140 is still firmly in contention going into the weekend.
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Vicar's son Willett had threatened to spring an upset when he sank a 50-foot eagle putt from off the green at the long 14th to go into the joint lead.
The Indian signed off his round of eight-under 63 on Saturday by rolling in a 40-foot eagle putt on the ninth, his 18th hole, to move to 15 under par.
The highlight of his round was a stunning 207-yard approach shot on the 15th which landed four feet from the flag, giving him the chance to convert a simple eagle putt.
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Hunter Mahan's tee shot on the 15th hole got stuck high up in a tree, leading to double bogey, but then he rolled in an eagle putt from off the 16th green.
After a dramatic 86-foot eagle putt five holes earlier and a birdie on the last hole, he is six under par for the tournament, tied for eighth place in a field of 132 players.
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Lingmerth finished a wild day with an 8-foot eagle putt on the par-5 16th and a 10-foot birdie on the island-green 17th to reach 12-under par when the third round was suspended because of darkness.
Kerr had a chance to regain a share of the lead at No. 15, but her makeable eagle putt slid just by on the left, and she and Pettersen both had short birdie putts, giving the leaders some breathing room.
Thompson holed a 50-foot eagle putt on the third hole, relied on a superb short game around the toughest part of the golf course to build a four-shot lead, and hung on for a two-shot win over Geoff Ogilvy that takes him places he always wanted to be.
Lawrie did not drop a stroke all day with the highlight a 40-foot putt for an eagle on the long ninth.
Donald missed a five-foot birdie putt and Howell three-putted from 20ft after lining up an eagle opportunity.
Driscoll had joined Johnson in the lead with one hole left to play, seven under for the day after five birdies and an eagle at the par-five 14th and he moved into the lead with a 15-foot birdie putt at the last.
He made a 17-foot birdie putt at the 221-yard second hole, and was 7 under his final eight holes with an eagle-birdie-birdie finish.
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