Russell Wilson's sloppy performance is saved by the defense as Denver rallies late.

It wasn't really flashy, it was totally repulsive.

The Broncos, however, won for the second week in a row.

Denver beats the 49ers on "Sunday Night Football," three turnovers

and forced a security to win 11-10

With that score ended only the second game in NFL history.

This was in spite of another tough pull for Russell Wilson and the offense.

Low-scoring competition sees Broncos and Chiefs top of AFC West

While San Francisco falls below 500 at NFC West.

Here are some instant lessons to learn from Sunday night's interconference matchup: