History of the Pittsburgh Steelers Dallas defeated the Steelers in Super Bowl XXX to become the second team behind San Francisco to win five Super Bowl Championships. Ten years later, Pittsburgh would join Dallas and San Francisco to become the third team to reach that milestone when they defeated the Seattle Seahawks in Super Bowl XL. Three years later, the Steelers would become the first team to win a sixth Super Bowl, achieving that milestone in the 2008–09 season. They played against the Arizona Cardinals in Super Bowl XLIII, with a 27–23 comeback victory. The Broncos have competed in seven playoff games against the Steelers,
History of the Pittsburgh Steelers 1960 (the two actually met in the Cowboys' first game as a franchise, with the Steelers winning 35–28), and have faced each other in the Super Bowl on three occasions (X (W), XIII (W), XXX (L)) with Pittsburgh leading the series 2–1. In the 1970s, Pittsburgh and Dallas were both renowned for stifling defenses named "The Steel Curtain" and "The Doomsday Defense" respectively. Pittsburgh became the first team to achieve three Super Bowl wins when it defeated Dallas in Super Bowl XIII, and the first team to achieve four Super Bowl victories a year later when they defeated the Rams.