What people perceive as a leg injury for Brady is most likely the result of him being jittery and not very confident because he knows he doesn't have offensive weapons that can get open. The loss of Cooks and Amendola coupled with Gronk being a shell of himself has turned this into a popgun offense. When the offense was going well a few weeks ago, Brady was driving the ball, and throwing darts. Even against Miami in the first half, he was throwing bullets. It's not a matter of whether or not he can do it. It's more a matter of his confidence in the offense being shot. He is jittery back there, and he can't find open guys.