1. FuÃŸball- und Sportverein Mainz 05 e. V., usually shortened to 1. FSV Mainz 05, Mainz 05, or simply Mainz, is a German association football club, founded in 1905 and based in Mainz, Rhineland-Palatinate. 1. FSV Mainz 05 have played in the Bundesliga, the top tier of the German football league system, for four consecutive years, starting with the 2009â€“10 season. The club's main local rivals are Eintracht Frankfurt and 1. FC Kaiserslautern. In addition to the football division, 1. FSV Mainz 05 have handball and table tennis departments.