Kizaru vs Sanji
On the other hand, Kizaru appears to be Akainu's RHM, just like Zoro is Luffy's. He also have a personal vendetta against him because he wasn't able to kill him in Sabaody. He has also been shown to be able to use a sword. I think Kizaru either dies by BB's hands or is Zoro's opponent. I personally prefer the BB one as I think that Mihawk himself would be Zoro's final war fight.