The Minnesota Vikings re-signed running back Alexander Mattison this offseason with the plan for him to be the starter. There have been trade talks surrounding Dalvin Cook, but no deal has materialized. He will officially be released on Friday, with several teams, including the Miami Dolphins, set to inquire about him. Up until this point, Mattison has strictly been a handcuff for Cook, but he's been a productive plug-and-play option at RB when Cook has missed time with injuries. Ty Chandler ...