Kahyasi, the 1988 winner of both the Epsom and Irish derbies, was euthanized at the Haras de Bonneval farm of his owner and breeder, the Aga Khan, in France after it was discovered that he had incurable tumors. He was 23.
An Irish-bred son of the Nijinsky stallion Ile de Bourbon, Kahyasi was trained in Newmarket by Luca Cumani. He won 5 of 7 starts for earnings of $1,207,908.