| SEIJUN vs Kazuya | 29–39 | 42.65% |
| SEIJUN vs Jin | 19–24 | 44.19% |
| SEIJUN vs Bryan | 9–28 | 24.32% |
| SEIJUN vs King | 12–18 | 40.00% |
| SEIJUN vs Steve | 14–16 | 46.67% |
| SEIJUN vs Dragunov | 10–18 | 35.71% |
| SEIJUN vs Reina | 14–14 | 50.00% |
| SEIJUN vs Hwoarang | 10–16 | 38.46% |
| SEIJUN vs Heihachi | 10–15 | 40.00% |
| SEIJUN vs Lili | 8–15 | 34.78% |
| SEIJUN vs Asuka | 7–15 | 31.82% |
| SEIJUN vs Victor | 14–5 | 73.68% |
| SEIJUN vs Clive | 9–10 | 47.37% |
| SEIJUN vs Lars | 6–10 | 37.50% |
| SEIJUN vs Jun | 7–9 | 43.75% |
| SEIJUN vs Paul | 9–6 | 60.00% |
| SEIJUN vs Law | 5–10 | 33.33% |
| SEIJUN vs Leo | 6–9 | 40.00% |
| SEIJUN vs Feng | 3–11 | 21.43% |
| SEIJUN vs Azucena | 7–7 | 50.00% |
| SEIJUN vs Lidia | 5–9 | 35.71% |
| SEIJUN vs Fahkumram | 4–9 | 30.77% |
| SEIJUN vs Xiaoyu | 2–10 | 16.67% |
| SEIJUN vs Devil Jin | 7–5 | 58.33% |
| SEIJUN vs Jack-8 | 1–10 | 9.09% |
| SEIJUN vs Leroy | 7–4 | 63.64% |
| SEIJUN vs Anna | 3–8 | 27.27% |
| SEIJUN vs Yoshimitsu | 4–6 | 40.00% |
| SEIJUN vs Claudio | 2–8 | 20.00% |
| SEIJUN vs Lee | 3–6 | 33.33% |
| SEIJUN vs Alisa | 2–6 | 25.00% |
| SEIJUN vs Miary Zo | 6–2 | 75.00% |
| SEIJUN vs Shaheen | 3–4 | 42.86% |
| SEIJUN vs Nina | 2–2 | 50.00% |
| SEIJUN vs Armor King | 1–3 | 25.00% |
| SEIJUN vs Eddy | 1–2 | 33.33% |
| SEIJUN vs Kuma | 2–0 | 100.00% |
| SEIJUN vs Raven | 0–2 | 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.