Harrington in the hunt in Killarney

Ross Fisher led by a solitary stroke after his third round at the 3 Irish Open tailed off following a flying start but a host of challengers, including Pádraig Harrington, are lined up behind him.

The Englishman held a three-shot overnight lead after a stunning second round of 61, and continued his momentum after birdying four of the first seven holes.

But a double-bogey at the eighth brought him back to the field and he dropped further shots at the 15th and 17th to card a level-par 71, allowing Chris Wood and Francesco Molinari to close to within one of Fisher's 12-under-par total.

Wood's 66 was matched only by Richard Bland as the best round of the day, while Molinari recorded three birdies in a solid two-under-par 69 to maintain his challenge.

Harrington is also in touch. Like Fisher, he also found grief on the eighth, chipping across the green and into a small stream.

A holed long putt for double bogey limited the damage and that was not to be the first time the Dubliner's expertise with the flat stick got him out of trouble as he once again took the adventurous route round the course.

A massive par putt sunk on the 18th after he found water off the tee was the pick of Harrington's 'get out of jail' plays on the day and a round of 69 means he will be in the third-last group out on Sunday.

But while Harrington battled to stay in contention, young gun Rory McIlroy found himself going backwards.

The 21-year-old has had plenty of birdies over the first three rounds and started with two more in his first two holes. But a bogey/double-bogey finish summed up his day and - playing alongside Wood - he finished the day just two shots under par after a 76 that included 41 shots on the back nine.

Michael Hoey is also in the mix on seven-under though he failed to improve his position, shooting a level par 71.

Shane Lowry, Darren Clark and Paul McGinley are the next Irish challengers, all at six-under. Clarke also finished poorly, finishing bogey/bogey. He had been as low as nine-under at one point but will is just six-under now after a 71. McGinley also shot 71 with two bogeys and two birdies.

Lowry continued to make up for his poor opening round. An eagle on the par-five 16th - playing into the breeze today - helped him to a 68.

Wood, buoyed by a six-under 65 yesterday, bounced back from bogeying the fourth with a run of five birdies from the fifth to the ninth and another on the 13th brought him to the brink of the summit.

'I was hitting really, really nice shots, and the putts,' he said.

'That's given me a lot of confidence and it's sort of gone through the rest of my game and I've given myself half a chance for tomorrow.'

Italian Molinari, meanwhile, turned in a one-under-par 34 after birdying the par-five seventh for the third day in succession and, after giving that shot back on the first hole of the back nine, he birdied the 11th and 14th to keep himself on terms with the Bristolian in second place.

Gonzalo Fernandez-Castano is a further shot back after an eventful round which looked as though it would earn him a share of the lead.

The Spaniard turned in 31 after five birdies and a solitary dropped shot at the third, and he was 12 under after a three at the 477-yard 12th hole.

But a double-bogey six at the last marked a frustrating finish to a fine 18 holes and left him to play in the penultimate group tomorrow.

He will follow Australia's Richard Green and Harrington on to the course after they both finished at nine under after rounds of 69.

The left-handed Green undid some of the good work of his four birdies with a double-bogey six at the 13th.

Noh Seung-yul and Anders Hansen reached eight under, the former recovering from a triple-bogey seven at the 15th by eagling the par-five next.

Bland's eight birdies saw him join a group at seven under that also includes Dane Mark F Hastrup and Northern Ireland's Michael Hoey - although the 37-year-old's round could have been even better had he not bogeyed the last two holes.

A birdie on the seventh was followed by bogeys on the eighth, 11th and 14th and he dropped three more shots in the final two holes for a 76 to slip to two under par overall.

Earlier, Northern Ireland's Graeme McDowell had a steady morning's work with a round of 68.

The US Open champion, following rounds of 70 and 72, birdied the second and seventh to reach the turn in 33 without dropping any shots and, by picking up a further shot on the 18th, put himself three under overall.