Grazer Athletiksport-Klub ( lit. ' Graz's Athletic Sport Club ' ; abbreviated as GAK ), better known simply as Grazer AK , is an Austrian sports club based in the city of Graz in the federal state of Styria . The football section was once among Austria's most popular clubs, enjoying success in the decade between 1995 and 2005. The other sections are basketball , diving and tennis , which however all act as separate legal entities. The "GAK" football section folded during the 2012โ13 Regionalliga Mitte Season in Autumn 2012. It has since been revived and returned to the Austrian Second League in 2019, [ 1 ] and four years later won promotion to the Austrian Bundesliga after a seventeen-year hiatus. [ 2 ]