By Matt Hladik The Minnesota Vikings have continued to add to their offensive backfield after the draft, signing Toledo running back Bryant Koback. Koback was a four-year standout at Toledo, rushing for 4,026 yards and 45 touchdowns in his career. He saved his best for last, racking up 1,400 yards and 15 touchdowns on the ground as a senior. Koback also scored double-digit touchdowns in 2018 and 2019, and potentially could have done the same in 2020 had he not been limited to six games in a COVID-shortened campaign. The Holland, Ohio native posted on Twitter last night that his “ready to get t…