Minnesota Vikings rookie running back Alexander Mattison (ankle) is questionable to play in Week 17 against the Bears. Dalvin Cook (shoulder) has already been ruled out with the Vikings already locked into the No. 6 seed for the playoffs. If Mattison returns, he'd likely split the workload with both Mike Boone and Ameer Abdullah, making him pretty unattractive in season-long leagues and DFS. That's especially true since Sean Mannion is expected to be under center while the team rests ...