Maybe we just have different definitions of a RBBC. The Dolphins rushed for 1,688 yards as a team last year; no RB had more than 584 rushing yards individually.  The team scored 15 rushing TDs; no individual RB had more than 4 (and the guy who had the most yardage was not the same guy who scored the most TDs).  To ME, that's a RBBC, but if you want to go with a "bellcow" that got 584 yards and 3 TDs, be my guest. Because Brown is probly a better RB than anyone they had on the roster last year, except possibly Gaskin, and because the team showed a willingness to go RBBC last year (at least by my standards). That's a bet you'd lose already, since they are in competition simply by being on the same team.