Dan Hanzus of NFL.com, is reporting that Robert Griffin III is listed as "questionable" for this Sunday's game against the Cleveland Browns. The rookie quarterback sensation injured his knee during Week 14's win over the Baltimore Ravens.

Griffin was hurt after a hit from mammoth defensive tackle Haloti Ngata. He was replaced by fellow rookie Kirk Cousins, who led the Redskins from eight points down to win the game 31-28.

Cousins, a fourth-round pick in the 2012 draft, is working with the first team in practice, according to Hanzus. That's significant news for the Redskins, who need to beat the Browns to maintain their late push for the playoffs.

At 7-6, the Redskins could need to win out in order to capture the NFC East title and earn a postseason spot. They are currently tied with the Dallas Cowboys, who entertain the Pittsburgh Steelers this Sunday.

Both are a game behind the division-leading New York Giants who will travel to Atlanta to battle the Falcons in Week 15.

Without Griffin, a potentially tricky road game suddenly becomes a difficult proposition. The Browns are enjoying a three-game winning streak and have the players to trouble the Redskins.

Their defense is capable, thanks to defensive tackle Ahtyba Rubin and middle linebacker D'Qwell Jackson. The Redskins would certainly miss Griffin's big-play capability against this savvy and smart unit.

That's not to say they won't have confidence in Cousins if Griffin can't play. After all, the former Michigan State star did complete both of his passes against the Ravens, including an 11-yard touchdown toss to Pierre Garcon.

He also ran in the 2-pointer to send the game into overtime. However, as effective as Cousins was in last week's brief cameo, his only other action this season came in Week 5 against the Falcons.

On that occasion, Cousins stepped in after Griffin suffered a concussion. He proceeded to hurl two interceptions to help seal Atlanta's win.

Cousins is strong-armed and capable, but the Redskins offense succeeds thanks to Griffin. The read-option plays and play-action passes, are designed to take advantage of Griffin's specific skill set.

Having Cousins under center, will likely cause more than a few adjustments in Washington's offensive gameplan. Cousins would still be able to lean on the run and could rely on another productive rookie, in running back Alfred Morris.

However, it will still be a tall order for him to deliver victory in a must-win game on the road, in what could be his first full pro start.