AUGUSTA, Georgia, April 7 (Reuters) - Three-time major

winner Padraig Harrington shot a four-under 68 on Saturday to

position himself for a final round push at the Masters but said

he is not putting any pressure on himself.

The Irishman, who finished in a tie for fifth at Augusta

National in 2002 and 2008, carded five birdies on his final six

holes Saturday to move within five shots of the lead.

Harrington said he was in a position of nothing to lose

going into the final round.

"I'm in a good position going into tomorrow. The likelihood

when it comes to the tournament committee, they generally set up

the golf course on a Sunday so that somebody is going to have to

go and make birdies," said Harrington.

"This is not a golf course or a tournament that you

generally can play to the middle of the green and try to

two-putt, no matter what your lead is. You're going to have to

play good golf shots and putt well on Sunday.

"It gives a great chance to somebody who is chasing here. It

really is a tough golf course to hold a lead on. A guy can make

an eagle and another guy can make a double-bogey on the same

hole and there not be a huge discrepancy on how they play it."

Few pundits had considered Harrington as a contender in the

year's first major after some disappointing form and he said the

lack of expectations allowed him to feel comfortable.

"I'm in a nice position, a reasonably relaxed position.

Obviously I'm chasing. It's not going to be the end of the

world. It's not like I've got a big lead going out there and I

have to hold on to it tomorrow. If it goes well, it goes well;

if it doesn't, it doesn't. It's not a big deal," he said.

Harrington won the PGA Championship and the British Open in

2008 but had disappointing majors in 2010 and 2011, missing the

cut five times in eight events, but he does not view himself as

having had a long spell without success.

"I've won more majors than anybody else in the last five

years, so in terms of, it's been a while; not really, when it

comes to majors," said Harrington, who won his first major at

the 2007 British Open.

"In terms of my own motivation tomorrow, I'm just going to

go out there and play. I'm happy with where my game is at and

where it's going. I don't need to go out there and prove

anything tomorrow.

"I'm in a great position in that sense. I've won three

majors. I'm going to win more majors, so I don't have to do it

tomorrow ... That's not my one and only chance."

(Reporting by Simon Evans; Editing by Frank Pingue)