Updated: May 9th, 2012 3:30pm - 6,762 views

Minnesota Vikings halfback Adrian Peterson worked out in front of reporters on Wednesday, four months from the day before the Sept. 9 season opener against Jacksonville. Peterson blew out his left knee in a game on Dec. 24 at Washington and had reconstruction surgery six days later. He reiterated on Wednesday he'd be "very surprised" and "disappointed" if he's not ready for Week 1.