 In 1958, Rantzau was ranked 17th top showjumping producer, moving up to the 11th spot in 1962, and fifth in 1963.In 1964, Rantzau was ranked second leading producer of showjumpers, second only to the great Furioso.In 1970, a new ranking for "best sires of dams" was published, in which Rantzau was ranked 3rd, behind Ibrahim and Furioso.