Vikings' RB Adrian Peterson was carted to the locker room after being rolled up by Raiders' safety Michael Huff today in Oakland's 27-21 win in what looked like a serious lower leg injury. However, head coach Leslie Frazier announced that X-Ray's on the RB's injured ankle were negative. The Vikings plan to give Peterson an MRI, but the RB is hoping to come back next Saturday when Minnesota takes on Atlanta. Before leaving with the injury, Peterson carried the ball six times for 26-yards and a TD. Source: National Football Post