Because every brain injury is different and scientific research is limited, doctors say they're unable to draw a straight line from past concussions to increased susceptibility for future ones. The risk depends on factors such as severity of the blow, recovery time and frequency of incidence. The NFL, which along with the players' association was called to Capitol Hill in 2009 to address the issue, is so concerned about brain trauma that it has talked about doing away with threepoint stances and kickoffs.He is in his third year with the team, but also on his third head coach and offensive coordinator. For the first time, he'll be throwing to his two primary receivers from the year before. He'll also be operating behind the best line he has had.

Beatty said he could understand why some could view Smith as distant, perhaps one reason reports emerged prior to the NFL Draft that Smith did not connect well with some NFL executives. That would be a misinterpretation, Beatty said