The JNwine.com Champion Chase is the highlight of the year at Down Royal and Sizing Europe has another crack at three miles in the Grade One showdown.
Henry de Bromhead's brilliant two-miler hasn't quite been able to stretch out his class in previous attempts to lift this prize, finishing second to Kauto Star in 2010 and chasing home Quito De La Roque 12 months later.
He arrives on the back of a Gowran Park success last month and again locks horns with Quito De La Roque who, along with First Lieutenant and Roi Du Mee, forms part of a three-pronged Gigginstown House Stud assault.
Last year's winner Kauto Stone is back for more, and the top-class line-up is completed by Mount Benbulben and Prince De Beauchene.
Paul Nicholls has won the Powers Irish Whiskey Chase for the past five years and he relies this season on Rolling Aces, who was last seen occupying the runner-up berth in the Racing Plus Chase at Kempton in February.
The conditions of this race would appear to suit him, but he will have to be at the top of his game because the likes of Toner D'Oudairies, Dedigout and Texas Jack are worthy adversaries.
Willie Mullins has another interesting French recruit on his hands in the shape of Gitane Du Berlais, who was third in Listed company at Auteuil and debuts for the champion trainer in the opening Value Cabs 3-Y-O Hurdle at 12.50.
Gilt Shadow beat all bar The Liquidator in the Grade One bumper at the Punchestown Festival and now goes jumping in the Tayto Group Maiden Hurdle.
Maxim Gorky reached the frame at Galway last week and makes a swift return to action for the Billecart-Salmon Handicap Hurdle, while his trainer Noel Meade should also have high hopes for Westhaven in the Rainbow Communications Handicap Chase and The Herds Garden in the Daily Mirror (Pro/Am) INH Flat Race.