After a morning filled with other pleasant and uplifting Detroit Lions news, here’s another quick little diddy which isn’t exactly shocking, but that doesn’t make it any less awful. Jahvid Best’s career is likely over.

Dave Birkett of the Detroit Free Press noted that after his failure to get clearance to play this season following two concussions in 2011, Best isn’t expected to play again. In total Best has suffered four concussions, the most severe of which occurred during his final college game when he landed on his head. Lions general manager Martin Mayhew spent senior bowl week scouting running backs, as it’s a position that needs to be addressed in the draft yet again after Detroit spent high picks on Best and Mikel LeShoure in recent years.

When another RB is selected in late April, that will almost surely cement Best’s status as a former player, even if he hasn’t made his retirement official at that point. He’ll then fade away, becoming the reference point for the league’s growing concussion problem, which robbed us of seeing this much, much more often…