Uimhiraceathair has been ruled out of next week's RSA Chase at Cheltenham after suffering a setback.

The eight-year-old was due to defend an unbeaten record over fences, having registered successes at Gowran and Navan, and had been as short as 10-1 for the Festival after impressing in a gallop at Leopardstown last month.

However, champion trainer Willie Mullins has confirmed his charge will not be heading to Prestbury Park and said: "He's lame and he's not going to Cheltenham."

Nicky Henderson reported Long Run and Punchestowns to be ready for Wednesday's acid test.

"We had a scare with Punchestowns last week when he had a bruised foot which held him up for a couple of days, but I don't think has affected us dramatically," the Seven Barrows trainer told talkSPORT.

"He's back in good form. He's a very high-class horse.

"He's only had two races over fences. I probably would have preferred a third one, but it's been a desperate winter for frost and snow and everything. He comes here in very good form.

"Long Run is something else. I'd like to think he might be something very special, but we'll find out next week."

Henderson has a third entry in Burton Port among 17 horses confirmed for the RSA, while Mullins still has two possibles in Citizen Vic and Shakervilz.

Diamond Harry and Weird Al are other leading contenders along with Weapon's Amnesty and The Nightingale. An ultra-competitive line-up is completed by Bensalem, Chasing Cars, Flight Leader, Hey Big Spender, Knockara Beau, Lenabane, Little Josh and Ogee.