Andre Johnson could be out a few weeks

CBS Sports' Mike Freeman hears that the Texans are expecting to be without WR Andre Johnson (hamstring) for "a few weeks, at least."  Freeman adds that "some in the organization were privately saying they felt Johnson's chances of playing this week were extremely slim."  We're expecting to get an update later today.  Kevin Walter and Jacoby Jones will start out wide for Houston if A.J. misses time.