Have you had success with the zero RB approach? I never have, especially in my 10 team standard ESPN league. I usually drop my first four picks on a mix of RBs and WRs. Usually goes RB, WR, RB, WR. The only position I usually go zero on is QB. Outside of the likes of Cam Newton or Aaron Rodgers, most QBs put up similar fantasy numbers. RBs, however, can vary greatly and bring you W's consistently considering the amount of touches a lot of RB1s get.