NFL Primary LogoNFL Alternate LogoNFL Wordmark LogoNFL Team History Who is the greatest running back in the NFL of All-time? LaDainian Tomlinson John Riggins Adrian Peterson Walter Payton Marshall Faulk Gale Sayers Jim Taylor Edgerrin James Tony Dorsett Marcus Allen Jim Brown Franco Harris Eric Dickerson Thurman Thomas Jerome Bettis Earl Campbell Barry Sanders Curtis Martin Emmitt Smith Larry Csonka …