Owner Andy Stewart believes it is "highly unlikely" a dream clash between Big Buck's and star mare Quevega will happen.
The incredible Big Buck's barely came off the bridle when securing his 18th consecutive victory in the Long Distance Hurdle at Newbury on Saturday and he is already odds-on to win the World Hurdle at the Cheltenham Festival for a remarkable fifth year on the bounce.
With challengers to his crown few and far between, some have suggested the Willie Mullins-trained Quevega should tackle the mighty stayer, but the champion trainer insisted on Sunday she would be bidding for a fifth successive Cheltenham win of her own in March in the David Nicholson Mares' Hurdle. The only conceivable place the pair could meet is at the Punchestown Festival, but Stewart does not expect his pride and joy to making the end-of-season trip to Ireland.
Stewart said: "Like Willie has said, I think the only way they would meet is if Big Buck's changed sex! Ruby (Walsh) obviously rides Big Buck's and Quevega and I just don't think it will happen.
"Quevega is as good a staying mare as I have seen, but I think it's highly unlikely we would go to Punchestown.
"Willie has said Zaidpour could have a crack at Big Buck's after his good win in the Hatton's Grace Hurdle at Fairyhouse, so we look forward to that. Big Buck's has won 18 races in a row now, certainly none of my other horses have come close to doing that, and we look forward to going to Ascot.
"I think it's unlikely he'll run in the Cleeve Hurdle in January, I don't think there's a lot to be gained by going there, so we'll get him right at his best to try to win a fifth Ladbrokes World Hurdle at the Festival. After that we'll look at Aintree, but the dates are compressed this season, so we'll have to see."
Reflecting on Saturday's Newbury romp for Big Buck's, the owner said: "The only thing I would say is that he probably didn't beat a lot, but Ruby was very happy with him and said he never came out of second gear.
"It was a nice comeback for him, he obviously wasn't fully revved up, and that should hopefully leave him spot-on for Ascot on December 22."
20 October 2014High-class possibilities for Trophy
Chelmsford City handed 57 fixtures
French option for Maarek
Billy back for chasing bow
Judge to bid for Breeders' glory
Pipe mulls Moon target
High hopes for Holywell
Judge in Breeders' frame
Hill stars for Stoute and Moore
Gabriel lifts Garnet for Deegan
New One back with a win
Light career hangs in balance
Stars shines on hurdling debut
King big guns ready to start
Tullius camp consider options
Doyle unlikely to appeal Ascot ban
Mullins prepares formidable team
19 October 2014New One breezes to victory
Lavelle has Becher plan for Lodge
Riches heading on road north
Down Royal plan for Tiger
New makes Kempton return
Panther hunting Canadian prize
Sun takes a shine to Cork
Hobbs upholds Showcase record
Another gold strike for Bronze
Gallant Noble a true Champion
Head turns on Charm in QEII
Madame is Ascot leading lady
Forgotten rules for Weld
Byron is poetry in motion
18 October 2014Forgotten rules for Weld
War misses Breeders' date
Rakti reaps Caulfield reward
Chatez bids for Balmoral crown
Lavelle duo top Cheltenham card
Integral takes on the boys
Noble on Champion mission
Belardo a Dewhurst sparkler
Together stands firm for Ballydoyle
Ivawood felled by plucky Thought
Crowley doubles up on Berkshire
Tendon injury sidelines Tent
17 October 2014Minstrel calls the tune
Sceaux set for chase campaign
Sari seeking Ascot gold
Charm out to show winning Spirit
Estimate aiming to go the Distance
French veteran back for more
O'Meara - G has the Force
Fallon considers American switch
Cossack maintains Elliott's record
Vautour goes chasing
Lucida heads Godolphin trio
McCoy sits out weekend action
No Middle ground for classy Ivawood
Big guns hold sway for QEII
Cirrus stands firm for Champion
Hanagan: Estidhkaar no soft touch