Through the first two games of the season, the San Francisco 49ers have the number one ranked defense in the entire NFL. This unit has not missed a beat during this red hot start coming on the heels of three consecutive seasons where they finished with a top-five ranked defense.
Here is where the 49ers' defense ranks so far this season:
Passing defense - 1st
Rushing defense - 2nd
Total defense - 1st
Points allowed - 3rd
What's made this auspicious start even more compelling is that the 49ers still are not whole on that side of the ball.