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,
2009 Pittsburgh Steelers season the Steelers would regain the lead 24–20. All that was needed was for the Steelers' defense to keep Oakland out of the end zone and they would win. But with nine seconds remaining, Gradkowski would once again find Louis Murphy open in the end zone for an 11-yard TD pass and the Raiders would win 27–24. The game would mark the fifth time in six games that the Steelers suffered a 4th quarter collapse, and the second time in three weeks Pittsburgh had fallen to an opponent with a losing record. At the conclusion of the game, the Steelers had