Minnesota Vikings running back Alexander Mattison is embracing his role as the team's new No. 1 option out of the backfield. "I've been a lot more prepared in the way of understanding where I'm going to be at in the playbook," Mattison said during an interview on SiriusXM NFL Radio. "I'm definitely comfortable as a professional athlete and understanding what I have to do to get the job done." Minnesota released Pro-Bowler Dalvin Cook this offseason, opening the door for Mattison to take over. ...