Source: Ian Rappaport on Twitter #Bills RB Karlos Williams is being suspended 4 games for violating the Substances of Abuse Policy — Ian Rapoport (@RapSheet) July 15, 2016 This is a mea culpa for me. In June, I wrote about the running backs behind LeSean McCoy, and I didn’t even mention Mike Gillislee. Even worse, I got shown up by 14Team Mocker, who highlighted Gillislee in a post arguing that now-suspended...