Right now, Mihawk doesn’t have a single rival who can match him. Shanks was his rival, but then he lost an arm—and even so, Shanks is still one of the strongest out there. So, Mihawk’s basically on hold until the endgame because there just aren’t any fighters badass enough to take him on. If Mihawk were to fight someone now, who’d it even be? There’s no one on his level. All we can do is wait for a worthy opponent to show up for him