The Minnesota Vikings have been hopeful that running back Adrian Peterson could return on Sunday from a high ankle sprain injury. On Friday, Peterson practiced yet again, but it was in limited fashion, not taking part in group drills and instead working out on his own. It would be surprising if he played on Sunday, given the current state of the VIkings season - they're out of the NFC North competition, aren't within striking distance of a wildcard and are focusing on the development of rookie quarterback Christian Ponder.
Regardless, he'll likely be a game-time decision on Sunday. If he can't go, then Toby Gerhart would get the start, with perhaps a bit of Percy Harvin in there to change things up. The Vikings will be more focused on keeping Ponder upright on Sunday, as they'll be taking on the Detroit Lions, who have a lackluster run defense, so Peterson may not even be needed. It's hard to see him playing if he's not 100% with no risk of re-injuring the ankle.