Swansea City Association Football Club is a professional football club based in Swansea, Wales that plays in the Championship, the second tier of English football. Swansea have played their home matches at the Swansea.com Stadium. The club was founded in 1912. In 2011, Swansea were promoted to the Premier League. The club was relegated from the Premier League at the end of the 2017–18 season.