Un De Sceaux makes his eagerly-awaited seasonal debut in the Paddy Power "So Quick, So Easy iPhone App" at Leopardstown.
Willie Mullins' star two-miler was forced to miss his intended start in the Tingle Creek Chase at Sandown earlier this month after the trainer felt the gelding was a little flat in the days before the race.
He had previously shone in a racecourse gallop and school at Thurles and his connections are keen to see their front-running star back in competitive action.
"I've brainwashed myself into thinking this isn't really his first run of the season, that came at Thurles with his gallop, like a charity race," said part-owner Colm O'Connell.
"As he's never had another horse in front of him his whole life, he'll have thought that was a proper race and he puts his all into everything he does.
"Whenever the tape goes up, he's gone and that's it - there's no stopping him.
"We're not going there thinking it's a formality by any means. Don't forget this time last year Clarcam beat Vautour, and Sizing Granite is also a very good horse.
"Then you've got the likes of Flemenstar and Hidden Cyclone - top, top horses and if they find 5lb or 6lb, they are right in the mix.
"Clarcam might be a horse who just loves Leopardstown, so we'll be wary of him.
"Every race our boy has, he puts his heart and soul into it and he'll have had a good blow after his gallop at Thurles. He'll love the ground and I must be the only person in Ireland who wanted it to rain all Christmas Day!"
Sizing Granite stepped up markedly on his previous form to win a Grade One at Aintree, beating God's Own who had given Un De Sceaux plenty to think about in the Arkle. Henry de Bromhead's seven-year-old was beaten on his return in Grade Three company, though.
"I know some people were slightly disappointed with his first run (of the season), but I wasn't, to be honest," said his jockey Jonathan Burke.
"He was taking on race-fit horses from the summer and he'll improve a lot from it.
"He seems in great shape, we know from last season he's a Grade One performer and he'll be primed and ready for this race. Obviously we're taking on Un De Sceaux, which won't be easy, but we'll give it a shot and see what happens."
A field of six is set to go to post, with Nicky Richards' SImply Ned the only British-trained contender.