Here's the latest on the injury to the star rookie running back.
Dalvin Cook went down with what appeared to be a non-contact knee injury in today's game against the Lions.
Minnesota's star rookie running back went down holding his knee after trying to make a cut 14-7 loss to Detroit.
Cook was able to limp off the field under his own power, but it didn't look good.
After the game, Cook was seen on crutches with his knee wrapped.
Minnesota says its concerned that Cook could have an ACL injury.
Cook had been one of the most-impressive rookies in the NFL this season, totaling more than 350 rushing yards and two touchdowns through four games.
Update: Minnesota's initial diagnosis is a torn ACL.