Tom Brady cautious about predicting Chiefs three-peat: 'There's a reason why no one's ever done it'

The Kansas City Chiefs are looking to accomplish the improbable this season as they set out to become the first NFL team with a Super Bowl three-peat. 

Future Hall of Famer Tom Brady says while the task isn’t impossible, especially for the Chiefs, he thinks it will be an uphill battle. 

Speaking to Yahoo Sports, Brady was asked his thoughts about the possibility of Kansas City winning a third straight Super Bowl. A seven-time Super Bowl winner himself, Brady expressed reservations.