I can't see them tag teaming it will probably go same way as this fight
The reason I think it may be a tag team is that both of them share some relations with the other.
Sanji and Kizaru
- CoO/Speed
- Vegapunk connections
- Colour scheme
Sanji and Ryokyugu
- Womanizers
- Ryokyugu hasn't eaten for 3 years and Sanji is a chef
Zoro and Kizaru
- Use swords
- Kizaru seems to be the RHM of Sakazuki
- Sabaody revenge plot
Zoro and Ryokyugu
- Colour Scheme
- I don't think Ryokyugu is Ushimaru but those bull patterns could be hinting towards this fight
Yeah, some of the points are too weak but Ryokugyu just got introduced to be fair. We don't even know about his powers. Also, I'll only think that it could be a tag team if them vs King and Queen is one. If not, then they will probably be 1v1s only.