Altior is just even-money with Betway to win Saturday's Clarence House Chase by more than 15 lengths.
The Nicky Henderson trained nine-year-old faces just two rivals in the Grade One contest and he's fancied to extend his unbeaten run in impressive fashion, with a personal best margin of victory (64 lengths or more) priced at 8/1.
Currently rated 175 over fences, he is just 4/5 to reach 180 by the end of the year, while it's 5/4 for him to remain unbeaten this season.
Betway's Alan Alger said: "On current evidence, Altior is on another level to his rivals in the two mile division and Saturday's Clarence House Chase looks set to be another stroll in the park.
"A win tomorrow will put him bang on track for the Betway Champion Chase, for which he's 1/2, while we also offer 5/4 on him remaining unbeaten this season.
"No horse has got within three lengths of Nicky Henderson's stable star since November 2015, with four of his victories over fences coming by 10 lengths or more, and we go just 4/7 that he repeats the feat at Ascot."
Betway - Sport - Horse Racing - Specials
Clarence House:
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Altior Wins by more than 15 lengths - Evens
Altior wins by 15 lengths or less - 11/10
Altior does not win - 6/1
Bets void if less than 3 Run
Altior Winning Distance:
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Single Figures - 11/8
Double Figures - 4/7
Void if Altior does not Win
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Widest Margin Win (64l+) - 8/1
Another Rival must complete
Rated 180+ by end of year - 4/5
Unbeaten this season - 5/4
Must run at least twice more