New England's Tom Brady watched his long throw sail past rookie Aaron Dobson just as Tampa Bay defensive end Adrian Clayborn pushed 320-pound left tackle Nate Solder into him during a joint practice Wednesday in Foxborough, Mass. Brady hit the ground, rocked backward and held his left knee — the same one he tore up in the 2008 season opener that forced him to miss the rest of the year. Even before he limped off the practice field, Twitter went nuts, and not just because it was a two-time MVP quarterback.