RasenBallsport Leipzig e.V., commonly known as RB Leipzig or informally as Red Bull Leipzig, is a German professional football club based in Leipzig, Saxony. The club was founded in 2009 by the initiative of the company Red Bull GmbH, which purchased the playing rights of fifth-tier side SSV Markranstädt with the intent of advancing the new club to the top-flight Bundesliga within eight years. The men's professional football club is run by the spin-off organization RasenBallsport Leipzig GmbH. RB Leipzig plays its home matches at the Red Bull Arena.
RB Leipzig was directly set to play in the traditional red and white colours of Red Bull football teams. All crests proposed at the club's founding were rejected by the Saxony Football Association as they were considered copies of the corporate logo of Red Bull GmbH. The team therefore played its inaugural season in 2009–10 without a crest. RB Leipzig later proposed a new crest, which was eventually accepted by the SFV in May 2010