The Pittsburgh Penguins (colloquially known as the Pens) are a professional ice hockey team based in Pittsburgh, Pennsylvania. They are members of the Metropolitan Division of the Eastern Conference of the National Hockey League (NHL). The Penguins are one of two NHL franchises in Pennsylvania, the other being the Philadelphia Flyers. The cities' proximity has led to a rivalry known as the "Battle of Pennsylvania". The club is owned by Mario Lemieux and Ronald Burkle, who purchased the Penguins in 1999 and brought the club out of bankruptcy.