1. Luffy vs Teach (captain vs captain)
2. Zoro vs Shiryu (swordsman and 2nd strongest vs swordsman and 2nd strongest)
3. Sanji vs Pizarro (Pizarro was a king from the north blue, his epithet is "corrupt king", perfect opponent for Sanji if he needs to refine his Conqueror’s Haki. Personality-wise he resembles some of Sanji’s past opponents like Queen or Jabra + Sanji used to cook for rats and Pizarro is cat-themed)
4. Jinbe vs Burgess (helmsman vs helmsman, both are physical fighters but complete opposites personality-wise)
5. Usopp vs Van Augur (sniper vs sniper)
6. Nami vs Lafitte (navigator vs navigator)
7. Chopper vs Doc Q (doctor vs doctor)
8. Franky vs Sanjuan Wolf (Sanjuan Wolf’s epithet is “Colossal Battleship” + perfect opportunity for General Franky to become the ultimate mecha)
9. Robin vs Devon (by elimination)
10. Brook vs Vasco Shot (also by elimination)