The Denver Broncos kicked off their preseason slate with a 30-9 victory over the San Francisco 49ers on Saturday. Check out ...

The 49ers just lost their preseason opener to the Denver Broncos by a score of 30-9. Here are the 49ers' grades for this performance.

Defensively, the Broncos poured it on, taking the ball away four times, and sacking the quarterbacks twice. Depth standouts included safety JL Skinner (forced fumble) and cornerbacks Kris ...