Altonaer FC von 1893
"Altona" is one of Germany's oldest football clubs: they were part of the Altona-Hamburg football league formed in 1894, as well as one of the founding clubs of the German Football Association (Deutscher Fussball Bund or German Football Association) at Leipzig in 1900. In 1903 at their home ground, they hosted the first-ever German national championship final played between "VfB Leipzig" and "DFC Prague". The match was refereed by "AFC" player Franz Behr, who also served as the vice-chairman of the newly formed DFB until 1904. The club rescued the match by providing a new ball when the original one proved to be unsuitable for play. The hosts of the country's first title match never won or even played in a national final, being able to advance only as far as the semi-finals in 1903 and 1909, and the quarter-finals in 1914.
Hamburger SV
Hamburger Sport-Verein e.V. , commonly known as Hamburger SV, Hamburg or HSV , is a German sport club based in Hamburg, its largest branch being its football department. Although the current HSV was founded in June 1919 from a merger of three earlier clubs, it officially traces its origin to 29 September 1887 when the first of the predecessors, SC Germania, was founded. HSV's football team had the distinction of being the only team that had played continuously in the top tier of the German football league system since the founding of the club at the end of World War I. It was the only team that played in every season of the Bundesliga since its foundation in 1963, until 2018 when the team were relegated for the first time in history.