Ian Rapoport of NFL.com and NFL Network reports that Harvin is out for their Week 10 clash against the Detroit Lions after spraining his left ankle during last week's loss to the Seattle Seahawks. The Vikings later officially ruled out Harvin against the Lions.
Harvin could still be seen limping badly, according to Rapoport.
The Lions have been playing solid defense of late and didn't allow the Vikings to score an offensive touchdown when the two teams met earlier in the season. The Vikings still won, in large part because Harvin had a kickoff return for a touchdown.
Follow Gregg Rosenthal on Twitter @greggrosenthal.