Keys to the game: Cowboys-Niners

Can Dan Quinn slow down Kyle Shanahan's offensive machine?

The San Francisco 49ers are on a tear. They have won their last 11 games, have put defenses in a bind, and are expanding the vocabulary of football fans. Kyle Shanahan is once again separating himself from the top tier of offensive play callers as the Cowboys come to town on Sunday afternoon. The 49ers offense is a blend of power running, opportune passing, positional and formational flexibility, and high-level play making.