Tiger Woods was poised to extend his astonishing winning streak after finishing day two of the CA Championship one stroke behind leader Geoff Ogilvy.

The world number one, who has won his past seven tournaments, moved into position for another victory, carding two eagles in a six-under-par 66 in a testing easterly breeze at Doral Resort's Blue Monster.

Woods finished in style with birdies at his final two holes, sinking a sharply-breaking 20-footer at the last to punctuate another excellent day in the office, giving him an 11-under 133 halfway total.

Australian Ogilvy shot a bogey-free 67 to lead on 12-under, with compatriot Adam Scott (68) in third place, three shots off the pace after bogeying the final two holes.

The event took on the markings of a three-man race, with Swede Robert Karlsson, Dane Anders Hansen and Indian Jeev-Milkha Singh six shots back in a tie for fourth place.

The British challenge was non-existent, with Luke Donald best of the bunch eight shots off the pace.

Woods, who played the par-five holes in a total of four under, believes they were the key to his round.

"The par-fives are where you've got to score," he said.

"With today's wind, you could hit two (of them) with irons, so you've got to make sure you take care of those.

"Play those in three or four under and the rest of the round in one or two under and you're looking pretty good."

This World Golf Championships event has become Woods' own personal property. He has won it six times in eight attempts, on six different courses.

He started today two strokes behind overnight leaders Ogilvy and Miguel Angel Jimenez, but it did not take long for that to change as he eagled his third hole, the par-five 12th, with a 40-foot bunker shot.

"I had a simple little bunker shot and kept telling myself to make sure I hit it hard enough," he said.

"When it landed, I thought that looks pretty good and about two feet out it was centre cut."

He added a birdie at the par-four 16th, before picking up another eagle at the par-five first, where he busted a 330-yard drive before hitting a well-judged seven-iron that nestled up little more than six feet from the pin.

Not that he was perfect, dropping a shot at the dangerous par-four third where, in making sure he avoided the water lurking right of the fairway, he pulled his drive behind a tree and had little choice but to lay up with his second shot.

But that was the first and only blemish on his card as he finished with typical aplomb to stamp his authority on the tournament.

Woods has not lost in more than six months, winning five times on the PGA Tour, as well as the European Tour's Dubai Desert Classic and his own unofficial Target Challenge.

Ogilvy, meanwhile, played in relative peace and quiet, far from the maddening crowds tracking Woods.

He was not quite at the peak of his game, but had no complaints about a 67.

"I didn't hit the ball quite as well as yesterday but I got up and down really well," he said after remaining bogey free for the tournament.