| Roronoa X Sanji vs Kazuya | 74–44 | 62.71% |
| Roronoa X Sanji vs Paul | 84–33 | 71.79% |
| Roronoa X Sanji vs Jin | 52–53 | 49.52% |
| Roronoa X Sanji vs King | 56–44 | 56.00% |
| Roronoa X Sanji vs Bryan | 44–37 | 54.32% |
| Roronoa X Sanji vs Law | 37–32 | 53.62% |
| Roronoa X Sanji vs Hwoarang | 31–31 | 50.00% |
| Roronoa X Sanji vs Reina | 50–12 | 80.65% |
| Roronoa X Sanji vs Dragunov | 36–24 | 60.00% |
| Roronoa X Sanji vs Nina | 35–24 | 59.32% |
| Roronoa X Sanji vs Devil Jin | 28–26 | 51.85% |
| Roronoa X Sanji vs Yoshimitsu | 18–33 | 35.29% |
| Roronoa X Sanji vs Alisa | 19–29 | 39.58% |
| Roronoa X Sanji vs Azucena | 30–17 | 63.83% |
| Roronoa X Sanji vs Eddy | 19–26 | 42.22% |
| Roronoa X Sanji vs Victor | 20–15 | 57.14% |
| Roronoa X Sanji vs Steve | 17–16 | 51.52% |
| Roronoa X Sanji vs Lili | 18–11 | 62.07% |
| Roronoa X Sanji vs Jun | 14–15 | 48.28% |
| Roronoa X Sanji vs Jack-8 | 13–15 | 46.43% |
| Roronoa X Sanji vs Lee | 11–14 | 44.00% |
| Roronoa X Sanji vs Feng | 9–15 | 37.50% |
| Roronoa X Sanji vs Claudio | 14–8 | 63.64% |
| Roronoa X Sanji vs Lars | 8–12 | 40.00% |
| Roronoa X Sanji vs Heihachi | 16–4 | 80.00% |
| Roronoa X Sanji vs Leroy | 11–7 | 61.11% |
| Roronoa X Sanji vs Xiaoyu | 7–8 | 46.67% |
| Roronoa X Sanji vs Leo | 9–6 | 60.00% |
| Roronoa X Sanji vs Asuka | 7–6 | 53.85% |
| Roronoa X Sanji vs Raven | 4–9 | 30.77% |
| Roronoa X Sanji vs Shaheen | 8–3 | 72.73% |
| Roronoa X Sanji vs Kuma | 4–7 | 36.36% |
| Roronoa X Sanji vs Lidia | 8–2 | 80.00% |
| Roronoa X Sanji vs Clive | 3–7 | 30.00% |
| Roronoa X Sanji vs Zafina | 3–3 | 50.00% |
| Roronoa X Sanji vs Panda | 2–1 | 66.67% |
| Roronoa X Sanji vs Armor King | 2–1 | 66.67% |
| Roronoa X Sanji vs Miary Zo | 0–1 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.