When you look at the five, it is also surprising.
The Eagles are undefeated with rookie Carson Went at quarterback. Philadelphia is coming off a blowout of the Steelers.
The Vikings have not lost despite the season-ending injury to quarterback Teddy Bridgewater, followed by running back Adrian Peterson going down.
The Broncos are unbeaten even after Peyton Manning retired. Trevor Siemian has done a solid job at quarterback.
The Ravens have played in several Maalox mashers but still have a zero in the loss column.
Finally there is the Patriots, 3-0 even without Tom Brady in the lineup. Bill Belichick is one of the greatest NFL coaches of all-time.