Michael Chiesa believes Alexander Volkanovski would become the greatest fighter of all time if he beats Islam Makhachev. UFC lightweight champion Makhachev (23-1 MMA, 12-1 UFC) makes his first title defense against featherweight champ Volkanovski (25-1 MMA, 12-0 UFC) in Saturday’s (Sunday locally) UFC 284 headliner at RAC Arena in Perth, Australia. After Daniel Cormier