Robert Griffin III's first NFL season just got tougher.
"I didn't know what it was right away," Davis said, via The Associated Press. "I have never experienced anything like that. I was unable to walk and then I knew something really was wrong.
"I was running my route and stuck my leg in and either got stepped on or it happened naturally."
Davis said he'll do his best to mentor Paulsen.
"That's why I am on the team, for this moment," Davis said, via The AP. "My job is to know everything he knows."
The Redskins have spoken openly about possibly bringing back Chris Cooley if they needed help because of injury. It looks like they need help now.Follow Gregg Rosenthal on Twitter @greggrosenthal.