The Vikings announced Saturday that Peterson had been downgraded on the injury report from doubtful to out and would not travel with the team to Atlanta to play the Falcons. This will be only the fourth game in Peterson's five-year NFL career that he will miss.
Toby Gerhart will be the featured runner in Peterson's place.
The Vikings also waived wide receiver Stephen Burton Saturday and signed tight end Allen Reisner from the practice squad with their top two tight ends hurting. Kyle Rudolph is doubtful because of a bruised quadriceps, and Visanthe Shiancoe is questionable due to a strained hamstring.
Minnesota Vikings running back Adrian Peterson (28) is carted off the field after being injured during the first half of an NFL football game against the Oakland Raiders, Sunday, Nov. 20, 2011, in Minneapolis. (AP Photo/Andy King)
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