| Seijuro vs Jin | 44–45 | 49.44% |
| Seijuro vs Kazuya | 53–36 | 59.55% |
| Seijuro vs Dragunov | 48–30 | 61.54% |
| Seijuro vs Bryan | 32–38 | 45.71% |
| Seijuro vs Reina | 43–23 | 65.15% |
| Seijuro vs King | 30–30 | 50.00% |
| Seijuro vs Heihachi | 27–33 | 45.00% |
| Seijuro vs Clive | 22–26 | 45.83% |
| Seijuro vs Steve | 24–23 | 51.06% |
| Seijuro vs Yoshimitsu | 21–24 | 46.67% |
| Seijuro vs Hwoarang | 22–23 | 48.89% |
| Seijuro vs Jun | 27–17 | 61.36% |
| Seijuro vs Lee | 21–22 | 48.84% |
| Seijuro vs Law | 19–23 | 45.24% |
| Seijuro vs Victor | 27–10 | 72.97% |
| Seijuro vs Devil Jin | 21–15 | 58.33% |
| Seijuro vs Asuka | 16–13 | 55.17% |
| Seijuro vs Azucena | 16–10 | 61.54% |
| Seijuro vs Claudio | 10–15 | 40.00% |
| Seijuro vs Lili | 11–13 | 45.83% |
| Seijuro vs Paul | 9–13 | 40.91% |
| Seijuro vs Lars | 12–9 | 57.14% |
| Seijuro vs Feng | 11–9 | 55.00% |
| Seijuro vs Nina | 12–8 | 60.00% |
| Seijuro vs Xiaoyu | 9–9 | 50.00% |
| Seijuro vs Raven | 10–7 | 58.82% |
| Seijuro vs Shaheen | 6–10 | 37.50% |
| Seijuro vs Eddy | 7–8 | 46.67% |
| Seijuro vs Leroy | 7–5 | 58.33% |
| Seijuro vs Jack-8 | 5–6 | 45.45% |
| Seijuro vs Lidia | 6–3 | 66.67% |
| Seijuro vs Alisa | 3–5 | 37.50% |
| Seijuro vs Kuma | 6–0 | 100.00% |
| Seijuro vs Leo | 0–3 | 0.00% |
| Seijuro vs Panda | 0–2 | 0.00% |
| Seijuro vs Zafina | 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.