| Sefiro vs Reina | 9–10 | 47.37% |
| Sefiro vs Jun | 7–8 | 46.67% |
| Sefiro vs King | 8–5 | 61.54% |
| Sefiro vs Azucena | 1–9 | 10.00% |
| Sefiro vs Hwoarang | 3–5 | 37.50% |
| Sefiro vs Clive | 2–6 | 25.00% |
| Sefiro vs Jin | 2–5 | 28.57% |
| Sefiro vs Lili | 4–3 | 57.14% |
| Sefiro vs Alisa | 6–1 | 85.71% |
| Sefiro vs Nina | 4–3 | 57.14% |
| Sefiro vs Lidia | 5–2 | 71.43% |
| Sefiro vs Heihachi | 5–2 | 71.43% |
| Sefiro vs Paul | 1–4 | 20.00% |
| Sefiro vs Bryan | 1–4 | 20.00% |
| Sefiro vs Steve | 1–4 | 20.00% |
| Sefiro vs Claudio | 3–2 | 60.00% |
| Sefiro vs Leroy | 3–2 | 60.00% |
| Sefiro vs Yoshimitsu | 2–2 | 50.00% |
| Sefiro vs Asuka | 3–1 | 75.00% |
| Sefiro vs Eddy | 2–2 | 50.00% |
| Sefiro vs Law | 2–0 | 100.00% |
| Sefiro vs Jack-8 | 1–1 | 50.00% |
| Sefiro vs Devil Jin | 0–2 | 0.00% |
| Sefiro vs Feng | 0–2 | 0.00% |
| Sefiro vs Leo | 0–2 | 0.00% |
| Sefiro vs Lars | 0–2 | 0.00% |
| Sefiro vs Lee | 0–2 | 0.00% |
| Sefiro vs Victor | 2–0 | 100.00% |
| Sefiro vs Xiaoyu | 1–0 | 100.00% |
| Sefiro vs Dragunov | 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.