The 1991 Philadelphia Eagles season was the franchise's 59th season in the National Football League. Despite having a 10–6 record and finishing with the top-ranked defense in the NFL, the Eagles failed to make the playoffs. During Week 1, quarterback Randall Cunningham was lost for the season with a knee injury. Statistics site Football Outsiders ranks the 1991 Eagles as the greatest defensive team in their ranking's history. Says Football Outsiders: