Sprinter Sacre stood his ground among eight entries remaining in the Boylesports.com Champion Chase at Punchestown on Tuesday.
Nicky Henderson's brilliant seven-year-old has again been imperious this season, taking his unbeaten run over fences to nine with victories at Sandown, twice at Cheltenham and most recently Aintree.
Some 19 lengths behind Sprinter Sacre in the Queen Mother Champion Chase was Sizing Europe, and Henry de Bromhead's 11-year-old, winner of this race 12 months ago, could reoppose.
Second to Henderson's 'black aeroplane' at Aintree was the Colin Tizzard-trained Cue Card, and he too still holds an engagement.
Henderson has an alternative to Sprinter Sacre in Finian's Rainbow, the former champion chaser who was fourth to his illustrious stablemate in the two-and-a-half-mile Melling Chase at Aintree.
De Bromhead also has a second string to his bow in the shape of Days Hotel.
Foildubh, Mad Moose and Noble Prince complete the octet.