Thorbjorn Olesen of Denmark had a 66 and was in the group at 8-under 208, along with Jimmy Walker (70), Bill Haas (73), Ken Duke (70) and Gonzalo Fernandez-Castano of Spain, who played with Woods and had a 68.
Woods narrowly beat the Spaniard a year ago in the opening round of the Match Play Championship. Fernandez-Castano noticed a big difference one year later.
"He's definitely more comfortable," he said. "I remember at the Match Play, his routine was longer. You could see he wasn't confident with what he was doing."
Woods, who already had won twice this year, has a clearer vision of what he's doing and where the ball is going. He surged ahead with a 6-iron into 12 feet on the 15th for birdie, and another 6-iron into 20 feet on the 16th for an eagle that put him atop the leaderboard.
Woods has three eagles this week — and six for the year — compared with four eagles all of last season on the PGA Tour.
"I made a few putts, and that's what I was pleased with today," Woods said.
Some of the most important putts were for par. Woods finished Friday's round with three straight bogeys, and he started Saturday with a 12-footer for par from behind the cup on the first hole. He poured that in, and it set the tone for the day.
Woods also made an 8-foot par putt on the fifth hole, and a 7-footer for par on No. 8. That was keeping him from losing ground, because there was nothing about the way Rose played that indicated he would come back to the field.
The turnaround was slow and steady, and then shockingly swift.
Rose opened with an 18-foot birdie on the first hole, a tap-in birdie on the third and then a 20-foot eagle putt from just short of the fourth green. At that point, Woods was six shots out of the lead after his two-putt birdie on the sixth. Woods followed with a 7-iron into 2 feet on the seventh, and two tough pars. He got up-and-down from the back bunker on No. 8, and then caught a huge break on the ninth when his tee shot was headed out-of-bounds and was hit a tree to stay in play.
Rose slowly began to leak. A three-putt from long range on the seventh. A missed 6-footer for par on the 10th. He still was three shots clear of Woods after a short birdie putt on the par-5 12th, and that's when it change — and quickly.
Rose three-putted from 60 feet on the fringe at the 13th with a weak attempt at his second putt. Four groups ahead of him, Woods rolled in his 20-foot eagle putt, and just like that, they were tied. Rose compounded his problems with a shot he sliced so badly on the par-3 14th that it nearly went out-of-bounds, and he had to scramble for bogey to fall behind for the first time.
He failed to birdie the 16th, three-putted the 17th and suddenly was a forgotten figure on the leaderboard.
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