The Tennessee Titans quarterback took part in the team's practice yesterday, wearing a large brace on his right leg.
The head coach told reporters: "I thought it was a good start for him. We'll see how sore he is, and we'll watch the tape kind of watch him a little closer and see how he was moving around, there's not a lot of stress out there doing things, but he threw the ball well.
"When he got hurt that day, we never thought we'd even be having this conversation this early after a couple weeks. We're just excited about how well he's recovered from the injury and how lucky he is to some degree on that."
Munchak has said that it is too early to say whether Locker will be able to play against the San Francisco 49ers.