Many factors combine to determine a running back's fantasy value: overall carries, goal line carries, pass-catching ability and the strength of his team's offense being chief among them.
Quality run blocking is another factor that belongs on this list. Studies I've done over the years indicate that good run-blocking carries (very roughly defined as plays in which the offense does not allow the defense to disrupt a rush attempt) provide five times as much fantasy value as bad run-blocking carries.
So which running backs benefited the most or least from good run blocking last season? Let's take a look at some top candidates while also keeping an eye on how these metrics can help fantasy owners determine if these backs will be overvalued or undervalued in 2017 fantasy drafts.