Pretty sure Queen is going to stop him before he gets to the Scabbards and Yamato will fight Jack. Narrative is key here:
- He announced his location. And in that moment Queen went missing in front of Marco (who now is only fighting King). We still need to know the Queen/Judge relationship
- More importantly, the 10th person is either Toki or Hiyori. Yamato has Momo. And I think its vital for Momo's character to either see his mother or sister again. Its also vital he sees the scabbards. Yamato defending the scabbards at this point makes 100x more sense than Sanji, especially with how tied to protecting Momo she is. Now she'll protect his retainers.
So yeah, I think this is setting up Yamato vs Jack and Sanji vs Queen. If Zoro isn't fighting King, it's gotta be Marco I guess, but ill hold off until we truly know what Marco is doing for the rest of the arc. Narratively it doesnt make sense since they mention that the new gen needs to take out the executives, not the old, but who am I to say.