DETROIT - Case Keenum stood in the pocket to take a hit, dipped his right shoulder to slip out of a sack and shuffled his feet in the pocket to give his receivers more time to get open. Looking like a savvy winner, instead of a journeyman, he picked apart Detroit's defense with his arm and made plays with his legs to help the Minnesota Vikings beat the Lions 30-23 on Thursday. Keenum threw for two touchdowns and ran for a score in the first half to give the Vikings a double-digit lead and they went on to win a seventh straight game. They took a huge step toward winning the NFC North by taking a three-game lead over the second-place Lions.