Roi Du Mee made all to land the At The Races Bobbyjo Chase at Fairyhouse as Prince De Beauchene and Seabass had to settle for minor honours.
That pair, trained by Willie Mullins and Ted Walsh respectively, both feature prominently in the ante-post lists for the John Smiths Grand National but had to be satisfied with place money behind the 5-1 winner.
Davy Russell executed an excellent front-running ride aboard Roi Du Mee, with last year's winner Prince De Beauchene travelling on his heels for much of the three-mile-one-furlong trip.
The pair were racing alongside each other coming to the fourth-last fence but a mistake from Prince De Beauchene saw him lose some momentum.
He soon came back on the bridle for Paul Townend and as the race got serious two fences from home, Katie Walsh produced Seabass to launch his challenge.
Roi Du Mee proved game up front and despite moving across to the stands rail, he kept finding for Russell and held off 8-11 favourite Prince De Beauchene at the line.
Graham Wylie, owner of Prince De Beauchene, was perfectly satisfied with his horse's performance and reports Aintree to be next on the agenda.
He told At The Races: "He ran with the choke out at the start and that's perhaps why he didn't quite get home.
"That will take the fizz out of him though and we are happy with that.
"He's a very good jumper and hopefully he will do the same in the National.
"He will probably go straight to the National now. We will see how he is in the morning and maybe he will have a racecourse gallop to help him settle better."
Trainer Gordon Elliott, who was travelling back from Newcastle's abandoned Eider Chase meeting, said: "Roi Du Mee has been a terrific horse for us this season and has been very consistent.
"We put a tongue strap on him today and it seemed to bring about a bit more improvement.
"I'm not sure what we'll do but he's in the Ryanair Chase and in the National. We hadn't really looked beyond today and we'll see how he comes out of this."