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