Chiefs QB Trent Green has been cleared to practice after six weeks of waiting. Green, who was knocked unconscious in the season opener against the Bengals, will begin participating in full workouts Wednesday. ?Based on what they?ve seen this week,? Peterson told The Star, ?they?re going to let him start practicing and (doing) pretty much everything we do in practice during the week. That does not mean he?s been cleared yet to play, but it?s a big step, and I, for one, know he?s anxious to get started.?