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