According to ESPN’s Adam Schefter, Vikings running back Adrian Peterson fully participated in practiced on Wednesday.
So it's not just Adrian Peterson: Steelers said RB Rashard Mendenhall was a full participant in today's practice.
— Adam Schefter (@AdamSchefter) September 12, 2012
The great news is that Peterson walk away from Sunday’s game with no swelling in his knee. He should be all set to go this week.