Adrian Peterson "making progress"

Vikings HC Leslie Frazier says RB Adrian Peterson (ankle) is "making progress."  The team will know more about his status later this week.  With a high-ankle sprain, we'd still consider AP no better than 50-50 to be ready for this Sunday's game against the Broncos.  RB Toby Gerhart will get another start if Peterson can't go.  He plodded to 44 yards and a score on 17 carries yesterday.