Enable could only finish sixth as Sottsass led home a clean sweep for French-trained runners in the Prix de l'Arc de Triomphe at ParisLongchamp.
Third in the race 12 months ago, trainer Jean-Claude Rouget had stated that only one day mattered for the four-year-old this year and he proved trained to perfection.
For John Gosden's Enable, chasing history with a third victory in the race, she was bogged down in the heavy ground and suffered interference when the pace quickened.
In contrast, Sottsass picked up smartly and stayed on well to beat In Swoop, with Persian King hanging on for third having made the running, just ahead of Gold Trip. Enable's Gold Cup-winning stablemate Stradivarius was seventh.
As a result of the interference, a stewards' inquiry was immediately called - but following a short deliberation, the placings remained unaltered.
