Featherweight champion  Alexander Volkanovski has a chance to win the lightweight title this weekend in the UFC 294 main even when he takes on titleholder  Islam Makhachev in a rematch.   “The Great” stepped up on 11 days notice to accept the fight after former champion  Charles Oliveira was forced out due to a  nasty cut .  If he wins, Volkanovski will have to defend both titles and he’s confident that he can. “A lot of people want to talk about can I keep two divisions busy