Could pass protection keep Alexander Mattison from being the No. 2 tailback in Minnesota?

The Vikings hope that, in his third NFL season, running back Dalvin Cook will finally reach his full potential. Given his injury history, they need to have other plans. And with Latavius Murray gone, the No. 2 spot on the depth chart becomes critical. For now, rookie running back Alexander Mattison holds that job. Reading between [more]