The Vikings surprised some by nabbing Mattison, a projected Day 3 pick, late in the third round of the 2019 draft. It isn't too hard to see what caught the team's attention, especially considering the trouble Dalvin Cook has had staying healthy. Mattison was a workhorse at Boise State, and his three-down skill set and stout frame (5-11, 221) should allow him to step straight into a starting role if necessary. He doesn't have plus speed or elusiveness and might not be a big-play threat, but he attacks holes with power, burst and balance, and he gets to the second level consistently even if he doesn't do a lot of damage once there. Even if Cook stays healthy, Minnesota could elect to use Mattison in short-yardage spots and at the goal line, and a lack of competition on the depth chart - Mike Boone, Ameer Abdullah and Roc Thomas are the other reserve running backs - points toward some carries for the rookie. But considering Cook's propensity for injury, Mattison should be on the fantasy radar. Read Past Outlooks