TSG 1899 Hoffenheim is a German football club based in Hoffenheim, a suburb of Sinsheim, Baden-Württemberg. In 2007, the club decided to adopt the use of the short form name 1899 Hoffenheim in place of the traditional TSG Hoffenheim.
Before being promoted to the 1. Bundesliga in 2008, the club played in Dietmar Hopp Stadion which was built in 1999 with a capacity of 5,000 (1,620 seats).
TSG 1899 Hoffenheim made their loftier ambitions clear in 2006 when the club's management decided to build the new 30,000 seat Rhein-Neckar-Arena suitable for hosting Bundesliga matches. The stadium was originally to be built in Heidelberg before the selection of a site in Sinsheim.
They have opened their first season in the 1. Bundesliga at the 26,022 capacity Carl-Benz-Stadion in Mannheim and will move to their new stadium upon its completion, projected to be in January 2009.