Here's a look at a key matchup heading into Sunday's Week Seven battle between the Redskins and Bears.

Redskins RB Ryan Torain vs. Bears' run defense

The Bears' defense has allowed seven rushing touchdowns this season — which is tied for the most in the league — but it hasn't give up a run of more than 29 yards.

Teams have been able to score on the Bears on short, powerful runs when they are inside the 10-yard line. Of the seven TD runs allowed by Chicago, all of them have been on carries of nine yards or less. Five of them have been on rushes of four yards or less.

Chicago ranks third in run defense and has been stout against the run for the most part, but those numbers show that it's vulnerable in the red zone and can wear down late in drives.

Redskins RB Ryan Torain had success against the Colts last week, rushing 20 times for 100 yards and two touchdowns. The Bears are better at stopping the run than the Colts are, but Torain has the potential to do damage in short-yardage situations against Chicago. This won't be a concern, of course, if Brian Urlacher and Co. keep Washington from getting close to the goal line.

It won't help the Bears' cause if WLB Lance Briggs, who sat out last week and missed practice Wednesday with an ankle injury, is operating at less than 100 percent or sidelined.