Oliver Kahn maintained his number one spot for the 2004 UEFA European Football Championship, but Germany were once again eliminated in the group stage. Oliver Kahn gave up his captaincy to Michael Ballack after the tournament. Germany's new manager Jürgen Klinsmann, who replaced Rudi Völler, adopted the strategy of rotating the number one spot between Kahn and his longtime competitor, Jens Lehmann of Arsenal, to stimulate competition between the two. On 7 April 2006, after two years of dispute for the position Klinsmann announced Lehmann was his first-choice goalkeeper for the 2006 World Cup. Kahn decided to stay on as a backup
Leo Kahn (entrepreneur) become a professor at Boston University. Kahn married his first wife, Dorothy Davids, in 1963 and had three children. The family resided in Chelmsford, Massachusetts, until Dorothy Kahn's death in 1975. Leo Kahn continued to operate his family's wholesale food distributor. However, he also launched a new grocery retailing division, which became known as Purity Supreme. The company initially opened small groceries, but then expanded to supermarkets. The Purity Supreme company also included the Heartland Foods Warehouse, which was called "the first successful deep-discount warehouse supermarket in the country" by Inc Magazine. One Kahn's biggest rivals was Thomas G. Stemberg,