ESPN Fantasy Projection: Mattison enters his second NFL season in the same position he was in as a rookie: Dalvin Cook's handcuff. The 2019 third-round pick impressed in his first season, producing 544 yards on 110 touches. Mattison averaged 4.6 YPC despite facing an average of 7.3 in-box defenders, highest in the NFL. Mattison is entering his age-22 season without much stand-alone value, but there's no doubt that he would vault to RB1 territory in the event of a Dalvin Cook injury in Minnesota's run-heavy scheme. Draft him, and stash him.