Cornerback Chris Cook (knee) and running back Toby Gerhart (knee) were on the field Wednesday at Winter Park as the Vikings were at full strength for their first practice of the week as they began preparing to face the Miami Dolphins on Sunday for their home opener.

Defensive tackle Jimmy Kennedy (knee) and cornerback Cedric Griffin (knee) also were taking part. The first injury report of the week will be issued later this afternoon. Until that comes out, we won't know how much work Cook, Gerhart, Griffin and Kennedy were able to do.

If Cook and Griffin don't play, the Vikings again would go into the game with only three healthy corners (Asher Allen, Lito Sheppard and Antoine Winfield).