BALLER MOVE: Add in 12+ Team LeaguesROSTERED IN: 61% of LeaguesANALYSIS: Running backs who are rostered in at least 60% of current leagues are normally excluded from these WW posts. However, there are occasional exceptions when it is beneficial to include a back with expanding availability. This applies to Mattison, whose percentage has gradually declined to the periphery of 60%.His continued role as Minnesota's RB2 behind Dalvin Cook remained unaltered during the Vikings' season opener, as ...