There’s still a whole lot we don’t know, but here’s what we have so far and will update you as we get details.
Redskins QB Robert Griffin III has suffered partial tears to the anterior cruciate ligament and lateral collateral ligament in his right knee, according to a report from The Washington Post.

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Via ESPN:

Griffin, who entered Sunday’s wild-card playoff game already nursing a previously sprained LCL in the same knee, was injured in the fourth quarter when he attempted to recover a muffed shotgun snap.

Redskins head coach Mike Shanahan said in a news conference Monday that the results of the MRI are prompting the team to send Griffin to Florida on Tuesday to see renowned orthopedist James Andrews for more examinations, essentially a second opinion that will decide the team’s fate for the 2013 season.

“There is a concern,” Shanahan said. “That’s why he’s going to see him.”

The Redskins are seeking a second opinion because it is possible the MRI could be showing previous knee injuries. Griffin suffered a torn ACL in his right knee while playing in college at Baylor in 2009.