Atalanta Bergamasca Calcio, commonly referred to as Atalanta, is an Italian football club based in Bergamo, Lombardy. It currently plays in Serie A, having gained promotion from Serie B in 2010–11. They are nicknamed the Nerazzurri and the Orobici. Atalanta play in blue-and-black vertically striped shirts, black shorts and black socks. The club stadium is the 21,300 seat Atleti Azzurri d'Italia. In Italy, Atalanta is sometimes called Regina delle provinciali to mark the fact that the club is by far the most consistent among Italian clubs not based in a metropolitan area, having played 58 times in Serie A, 28 times in Serie B and only once in Serie C. The club won the Coppa Italia in 1963 and reached the Cup Winners' Cup semi-final in 1988, when it was still competing in Serie B. This is still the best ever performance by a non-first division club in a major UEFA competition. Atalanta also participated in four seasons of UEFA Europa League, reaching the quarter-finals in the 1990–91 season.