In the midst of what could've been just the fifth undefeated season in NFL history, the 2011 Green Bay Packers failed to improve on their 13-0 record in a week 15 contest against the Chiefs.
Cold, bone-chilling climate in Kansas City marked the first loss of the season for the Packers who went on to finish the 2011 season 15-1, and it was also their first loss in a year. The 19-game win streak had come to an end, but the ultimate goal of home field advantage remained ahead of them and the loss, well, in the rear-view mirror.