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