Where does Giants' Super upset rank?

Greatest upset in Super Bowl history? Just where does the New York Giants' dramatic victory over the New England Patriots in Super Bowl XLII rank? After all, the Giants were a 14-point underdog, and they were taking on the first team to reach the Super Bowl with a perfect 18-0 record. Greatest upset in Super Bowl history? Just where does the New York Giants' dramatic victory over the New England Patriots in Super Bowl XLII rank? After all, the Giants were a 14-point underdog, and they were taking on the first team to reach the Super Bowl with a perfect 18-0 record. In pure football terms, this was not the biggest upset in Super Bowl history. Not even close. Even though New York was the fifth seed in the NFC, having won three road games in the playoffs to reach the Super Bowl, this Giants team was hardly a lightweight. They were led by a solid quarterback who was picked first overall in 2004. They had a stout defense that already gave New England all it could handle in the regular-season ... (link)