Playing their only game in a 24-day stretch, the Bears (4-2) are tied for the division lead with the Lions (4-2), a half-game ahead of the Packers (3-2). On Sunday, Detroit hosts the Cincinnati Bengals, while Green Bay plays the Cleveland Browns at Lambeau Field.
The offense will be challenged Sunday by a Redskins 3-4 defense that features nose tackle Barry Cofield, and outside linebackers Ryan Kerrigan and Brian Orakpo. Cornerback DeAngelo Hall tied an NFL record by intercepting four Cutler passes in the last meeting between the teams in 2010.
Generating a more consistent pass rush with their front four remains a top priority for the Bears, who rank 30th in the NFL with eight sacks. The only teams with fewer are the 1-4 Steelers with seven and the 0-6 Giants with five. The 6-0 Chiefs lead the league with 31.
Bostic had a stellar preseason. The 6-1, 245-pounder returned an interception 51 yards for a touchdown against the Panthers, delivered a highlight-reel hit that caused an incompletion versus the Chargers and led the Bears with eight tackles against the Raiders.
The defense must contain Redskins quarterback Robert Griffin III. Griffin sustained a serious knee injury in last season's playoffs and hasn't performed as well this year as he did during his spectacular rookie season in 2012. But he showed flashes of that form last Sunday when he rushed for a season-high 77 yards in a loss to the Cowboys.
Last season Griffin led the Redskins to the NFC East title by completing 65.6 percent of his passes for 3,200 yards with 20 touchdowns, five interceptions and a 102.4 passer rating. He also rushed for 815 yards and seven TDs.
This year he has connected on 59.8 percent of his passes for 1,448 yards with six TDs, five interceptions and an 80.4 rating while rushing for 149 yards and no touchdowns.
The lack of a pass rush has contributed to the Bears allowing at least 21 points in each of their first six games for only the second time in the franchise's 94-year history.
The defense has continued to take the ball away and get in the end zone, however. The Bears are tied for second in the NFL with 17 takeaways and have scored four defensive touchdowns, increasing their total to a league-high 13 the past two seasons.
The defense will be bolstered by the return of cornerback