The Kansas City Chiefs have all the hallmarks of an unstoppable juggernaut: back-to-back Super Bowl titles, an all-time great quarterback and an unblemished 9-0 record. But as anyone who has watched them knows, the undefeated Chiefs are far from perfect.

The Chiefs' 15-game winning streak dating back to last season isn't an NFL record, either. The longest combined winning streak between the regular season and postseason belongs to the Patriots, who ripped off 21 straight victories from the 2003 regular season, through the 2003 playoffs and into the 2004 regular season.

The Kansas City Chiefs (9-0) haven’t lost a game since Christmas Day of last year. If they have their way, they’ll keep the NFL’s current longest winning streak alive with a victory over the Buffalo Bills (8-2) in Week 11.

Thanks to a handful of miraculous escapes, the defending Super Bowl champions are one of only 22 teams since 1970 to start the season with nine straight wins.