Adrian Peterson ran for a pair of 1-yard scores in the first quarter Sunday and Minnesota kept its playoff hopes alive with a 21-14 win over Chicago. Peterson racked up another 100-yard-plus rushing game for the Vikings (7-6), rambling for 154 yards on 31 carries in the victory against their NFC North rivals. Christian Ponder helped Minnesota snap a two-game skid despite completing just 11-for-17 passes for with 91 yards with an interception. The struggling Bears (8-5), meanwhile, fell for the fourth time in five games. Jay Cutler was picked off twice en route to a 260-yard passing performance while Brandon Marshall made a 10 catches for 160 yards and a score in the loss.