Zoro vs. Hyouzou
Luffy vs. Foxy
Sanji vs. Wanze
Usopp & Chopper vs. Mr. 4 & Miss Merry Christmas
Strawhats vs. New Fishman Pirates
I'm suporting Zoro vs Hyouzou; when Hyouzou began rambling that was the strongest Swordsman on Fisham Island I thought he could at least kill Zoro's boredom or allow him to be challenged a bit, but it seems I was mistaken. That fight was ultimately pointless imo.