Based in Baden-Württemberg, TSG 1899 Hoffenheim is a professional football club that has made great strides since 2000 to join the top tier of teams in the country. According to many German football pundits and commentators, the rise of TSG 1899 Hoffenheim is due to the financial backing of the software entrepreneur, Dietmar Hopp, who has enabled the club to buy players from outside their traditional recruitment area. Under his auspices, the club was able to get into the top tier of the Bundesliga, the German equivalent of the Premiership. The club stages its home fixtures at the Wirsol Rhein-Neckar-Arena, a multi-use sporting venue with a capacity of 30,150 spectators. It was first opened in January 2009, after it had been built for a reported cost of 100 million euros.