And then there were three.
The Chicago Bears met the Green Bay Packers on Monday Night Football in what was a battle of two of the NFL's four undefeated teams.
Jay Cutler and the Bears took home the victory making them the third undefeated team after Week 3.They join the Kansas City Chiefs and Pittsburgh Steelers.
The Chiefs are heading into the bye week so they'll be on this list until at least Oct. 10 when they meet the Indianapolis Colts.
As for the Bears and Steelers...Chicago heads to New York to play the Giants while the Steelers will host the Baltimore Ravens.
It's possible the Chiefs could be the NFL's final undefeated team.