ミラノ大賞典
In 1990 Ibn Bey began by finishing third to Creator and In The Wings in the Prix Ganay and then ran third to In The Wings in the Coronation Cup. In June he was ridden by Mick Kinane in the Gran Premio di Milano, but finished fourth, more than twelve lengths behind the winner Tisserand. In July Ibn Bey was reunited with Quin and returned to Germany for the Grosser Preis von Berlin in which he faced a field which included Mondrian as well as the German Derby winner Karloff. He recorded his fourth Group One victory, beating Mondrian by four lengths. Ibn Bey and Mondrian met for the third time in the Grosser Preis von Baden in September and on this occasion the German horse won. Ibn Bey led for most of the race but was caught inside the final furlong and beaten by a length.