From Chicago Sun-Times:
Minnesota Vikings starting cornerback Cedric Griffin is expected to get an MRI soon. But the team fears he has a torn ACL and possibly a torn MCL, as well, according to a source with knowledge of the situation.
Griffin suffered the injury on the opening kickoff of overtime, when Pierre Thomas gained 40 yards. Griffin was tended to for several minutes on the field. Rookie Asher Allen replaced him and was flagged for a holding penalty on the Saints’ game-winning drive. The play was on third down.
Griffin faces a significant recovery time.