Originally posted on Pro Sports Daily  |  Last updated 5/10/12

NEW ORLEANS - JANUARY 24: Adrian Peterson #28 of the Minnesota Vikings runs the ball against the New Orleans Saints during the NFC Championship Game at the Louisiana Superdome on January 24, 2010 in New Orleans, Louisiana. (Photo by Jed Jacobsohn/Getty Images)

Vikings running back Adrian Peterson and head athletic trainer Eric Sugarman put on a show for the media on Thursday. During a 15-minute workout set up for reporters at the team's indoor practice field, Peterson demonstrated some of the drills he's working on now that he's 19 weeks removed from major knee surgery.

Peterson tore the anterior cruciate and medial collateral ligaments in his left knee during the Vikings' Christmas Eve win at Washington. He had surgery six days later and has been ahead of schedule ever since.

Peterson looks in great shape, as usual, but his left leg is understandably stiffer that observers are accustomed to seeing. He did some lateral drills, scooping up and returning a soccer ball that was rolled to his left and right. He also ran in a circle, sprinted the width of the field four times and did a standing jump to a box that was about four feet high. Peterson wore a knee brace for all but the straight-line sprints.

Although Peterson is pushing hard to reach his goal of returning in time for the Sept. 9 season opener, he also said he's been smart about listening to doctors orders and not overdoing it.

"He realizes now that there's too much to lose by doing something foolish the past four months and the next four months," Sugarman said. "He's been pretty good. Now you have to pull back on the reins every once in a while and just remind him. But he's been pretty good about it and I'm on the record as saying that he'll continue."

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