Clutch New England Patriots' QB Tom Brady went down and went down hard during a joint pre-season practice yesterday with the Tampa Bay Buccaneers.

In the incident, caught on camera, Brady can be seen clutching his knee and rocking back and forth on the field. He was able to walk off the field with only a sprained knee, with doctors saying he should be able to return to practice today. However, the injury could impact Tim Tebow if it leads to more pre-season playing time for the former NY Giants player.