| Sei0 vs King | 10–7 | 58.82% |
| Sei0 vs Xiaoyu | 5–9 | 35.71% |
| Sei0 vs Steve | 9–5 | 64.29% |
| Sei0 vs Law | 6–6 | 50.00% |
| Sei0 vs Dragunov | 4–7 | 36.36% |
| Sei0 vs Asuka | 9–1 | 90.00% |
| Sei0 vs Clive | 3–7 | 30.00% |
| Sei0 vs Paul | 2–7 | 22.22% |
| Sei0 vs Jin | 3–5 | 37.50% |
| Sei0 vs Kazuya | 5–3 | 62.50% |
| Sei0 vs Devil Jin | 5–3 | 62.50% |
| Sei0 vs Lars | 5–2 | 71.43% |
| Sei0 vs Nina | 5–2 | 71.43% |
| Sei0 vs Leroy | 4–3 | 57.14% |
| Sei0 vs Hwoarang | 3–3 | 50.00% |
| Sei0 vs Jack-8 | 2–3 | 40.00% |
| Sei0 vs Feng | 2–3 | 40.00% |
| Sei0 vs Reina | 2–3 | 40.00% |
| Sei0 vs Victor | 3–2 | 60.00% |
| Sei0 vs Eddy | 2–3 | 40.00% |
| Sei0 vs Bryan | 0–4 | 0.00% |
| Sei0 vs Leo | 3–1 | 75.00% |
| Sei0 vs Yoshimitsu | 1–2 | 33.33% |
| Sei0 vs Panda | 1–2 | 33.33% |
| Sei0 vs Zafina | 2–1 | 66.67% |
| Sei0 vs Azucena | 3–0 | 100.00% |
| Sei0 vs Lili | 2–0 | 100.00% |
| Sei0 vs Jun | 1–1 | 50.00% |
| Sei0 vs Lidia | 1–1 | 50.00% |
| Sei0 vs Lee | 0–1 | 0.00% |
| Sei0 vs Raven | 1–0 | 100.00% |
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.