We don't know if how tough Gaballo was as the last fight that he has ended up controversial.
He needs to be more aggressive if he wants to outshine Donaire. If he will have the same strategy, it will be tough for him to disappoint Donaire.
A boxer with knock out power always have a chance he has a good chance but Donaire knows how to move around against his opponent with power on both hands, the bantamweight is very ideal for Donaire because he has power and speed combine in that division, Graballo's big hope is his stamina if he can level the score heading into the last four rounds he has a good chance.