An MRI on Minnesota Vikings running back Adrian Peterson's right knee revealed a torn meniscus, coach Mike Zimmer confirmed on Monday.
Zimmer did not dismiss the idea that Peterson could play with the torn meniscus, according to ESPN's Adam Schefter.
Peterson sustained the knee injury in Sunday night's 17–14 win over the Green Bay Packers, and was seen using crutches and a knee brace to get around after leaving the game.
Peterson was helped off the field and into the locker room after a five-yard run with five minutes remaining in the third quarter. The Vikings turned to Jerick McKinnon for the remainder of the game.
Peterson previously underwent ACL surgery on his left knee.
Peterson's season has been off to a slow start, as he has rushed for only 50 total yards in his first two games. He had 19 yards on 12 carries on Sunday night,