Minnesota Vikings running back Alexander Mattison (concussion) returned to a limited practice on Thursday after sitting out of Wednesday's session due to a concussion he suffered in the Week 10 win over the New Orleans Saints. It's progress for Mattison, but he will still need to clear the league's concussion protocol before this Sunday night's contest versus the Broncos in Denver. The good news is fantasy managers that have been using Mattison in their starting lineups should know by Saturday ...