Clinton Portis is in top form, but the Broncos will need more from QB Jake Plummer during the stretch run.
Now that the Broncos have their starting QB healthy, they'll start to concentrate on running the ball more.
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Dennis Erickson is already under enormous pressure, and losing to Steve Mariucci's Lions would be devastating.
A slimmed-down Trevor Pryce is only one of the changes on the Broncos' defense.