Kansas City's loss to the eventual Super Bowl champion could be labeled as a stepping-stone moment, but that was a championship route that will be difficult to replicate.
With Peyton Manning retired and Ben Roethlisberger's team reeling, Tom Brady represents the old guard's last stand. The Chiefs have an excellent chance to close this chapter.
How many of the quarterbacks in NFL history to throw for at least 450 yards and three touchdowns in one game and still lose can you name in five minutes?