Vikings running back Adrian Peterson was injured during Tuesday afternoon’s practice in Mankato. Peterson did not return to practice, but a Vikings source said that Peterson appears to be fine.

Peterson was hurt on a running play up the middle after contact with defensive players. He fell to the ground, got up and limped to the sidelines. A few minutes later he returned for one play, and then a few minutes later he left the field with head athletic trainer Eric Sugarman and went into a locker room with an apparent thigh injury.

Peterson remained there for the duration of practice, but Sugarman returned to the sideline not long after departing, another sign that suggested Peterson’s injury was not severe.

After the practice, Vikings players, including Peterson’s replacement with the first team, Jerick McKinnon, said that they believed Peterson would be OK.

"He got tangled up," McKinnon said. "A defender fell on him, but he said he was alright. Everybody knows Adrian's got a cape on. He'll be back out here tomorrow. I don't think anybody's worried about him."

Peterson is not expected to play in any preseason games for the Vikings and has limited contact in practice as well.

Peterson has missed seven total games in his last four full seasons, not including his suspension-shortened 2014 season.