Harvin did not practice all week after being injured against Seattle. He is widely considered one of the toughest players on the roster, so coach Leslie Frazier says he is not ruling out Harvin entirely just yet. He will try to test things again on Saturday and before the game Sunday before a final determination is made.
Losing Harvin would be a big blow to a Vikings passing offense ranked 30th in the NFL. Christian Ponder has struggled mightily and the rest of the team's receiver corps has had difficulty creating separation in the secondary.
The Vikings (5-4) have lost three of their last four games.