A Plus Tard inflicted a surprise defeat on Chacun Pour Soi in the Paddy's Rewards Club "Loyalty's Dead, Live For Rewards" Chase at Leopardstown.
Chacun Pour Soi was unbeaten in two previous outings for Willie Mullins - and having claimed the notable scalp of Defi Du Seuil at the Punchestown Festival, he was the 8-15 favourite for his seasonal reappearance.
With his stable companions Cadmium and Great Field ensuring a strong gallop in front, Chacun Pour Soi travelled kindly in behind under Paul Townend and moved ominously to the lead after jumping the second fence from home.
However, Rachael Blackmore covered the move aboard the Henry de Bromhead-trained Cheltenham Festival winner A Plus Tard - who finished second in last month's Fortria Chase at Navan - and the pair settled down to fight it out in the straight.
There was little to choose between the pair jumping the final obstacle, but with the benefit of a recent outing, A Plus Tard (4-1) finished the stronger and passed the post almost four lengths to the good.