David Duval missed a great chance at the last

"We've got another player who is certainly the best in the game right now, and I think what it will do is make my victories in these Majors that much more special."

And third-placed Mickelson added: "He seems to do just what is required.

"When I look back on this week, if I'm going to win with Tiger in the field, I cannot make the mistakes that I've been making."

Mickelson's downfall was caused by a poor drive on the 455 yard par-four 11th, the first hole in the infamous trio known as Amen Corner.

"I didn't feel as though 11 was that big of a deal, although I lost two shots on that hole," Mickelson said. "I hit a poor drive. I tried to sling a hook around the corner and hit it right into a tree."

Mickelson missed his five-foot par putt, but said the real killer was on 16.

Having moved back within a stroke of his playing partner at 14-under, he carded a bogey.

"I needed to step up and make a really good swing there and attack that pin, and I just pulled a seven-iron up on that slope," he said. "That was a very disappointing shot."

Duval, like Mickelson, had chances to tighten the screw on Woods and his failure to take advantage will be hard to bear.

Duval's most glaring mistake came at the last hole, when a six-foot birdie putt that would have brought him level with Woods slipped past the pin.

"The putt at 18, I guess I pulled it a little bit," he said. "I had it breaking a little bit left. You know, I don't see it, because I'm on top of it. I missed it."

Mickelson was determined to take something postive from the experience of playing second fiddle to the game's undoubted maestro.

"I'm certainly disappointed," he said. "But I'm getting to the point now where I have to look back on the round and figure out how to improve more next time, and see if I can come through for next time."