As Week 4 of the NFL Fantasy Football season approaches, experts are highlighting several running backs to start and sit. Rising rookies like Quinshon Judkins and Cam Skattebo are making waves, while veterans face scrutiny in the rankings. Notable insights include the top 10 backup running backs and key trade values as teams reassess their strategies. Players such as TreVeyon Henderson and David Montgomery are recommended starts, with comprehensive rankings and handcuff options available for fans to consider. The focus also remains on high-leverage opportunities that could significantly impact matchups, making this week crucial for fantasy managers.