BlackBeard vs Any Admiral.
Shanks or Mihawk vs Kaido.
Sabo vs Magellan(doku doku's poison is flamable).
Enel vs Mr.1(steel attracts lightning LOL).
Katakuri vs Weevil(headcannon:Weevil is tanky as fuck and can fight for days,so FS will not give the win in the long run for Kat).
Kidd vs Fujitora (i wonder which ability is superior).
Law vs Imu or Gorosei(he might be able to undo the eternal youth surgery).
Shanks or Mihawk vs Kaido.
Sabo vs Magellan(doku doku's poison is flamable).
Enel vs Mr.1(steel attracts lightning LOL).
Katakuri vs Weevil(headcannon:Weevil is tanky as fuck and can fight for days,so FS will not give the win in the long run for Kat).
Kidd vs Fujitora (i wonder which ability is superior).
Law vs Imu or Gorosei(he might be able to undo the eternal youth surgery).