The Vikings have a scary chronic issue with WR Percy Harvin's migraines, but he has said publicly this offseason that he hasn't felt this good in a long time. The team doctors obviously will keep a close eye on him, and they'll hope that he doesn't have any future recurrences.

Cornerback is a concerning position; Cedric Griffin and Chris Cook, the top two RCB candidates, are coming off season-ending knee injuries. Griffin came back from an ACL tear prior to last season only to suffer another torn ACL in his other knee after only two games. Cook suffered a torn meniscus in camp, had it repaired but it never felt right in October, so he was shut down.

OLG Steve Hutchinson should be fine coming off a broken thumb, but the team has to wonder if his best years are behind him anyway.

The Vikings are not concerned about RB Adrian Peterson's ankle, which was just a late-season flare-up and has healed.