| Seiza vs Kazuya | 22–15 | 59.46% |
| Seiza vs Reina | 16–20 | 44.44% |
| Seiza vs King | 10–14 | 41.67% |
| Seiza vs Jin | 14–9 | 60.87% |
| Seiza vs Lili | 9–12 | 42.86% |
| Seiza vs Jun | 10–11 | 47.62% |
| Seiza vs Dragunov | 7–13 | 35.00% |
| Seiza vs Victor | 8–11 | 42.11% |
| Seiza vs Eddy | 5–14 | 26.32% |
| Seiza vs Feng | 6–8 | 42.86% |
| Seiza vs Nina | 9–5 | 64.29% |
| Seiza vs Yoshimitsu | 6–7 | 46.15% |
| Seiza vs Hwoarang | 8–5 | 61.54% |
| Seiza vs Asuka | 4–8 | 33.33% |
| Seiza vs Law | 6–5 | 54.55% |
| Seiza vs Steve | 4–6 | 40.00% |
| Seiza vs Shaheen | 5–5 | 50.00% |
| Seiza vs Bryan | 3–6 | 33.33% |
| Seiza vs Lars | 6–3 | 66.67% |
| Seiza vs Claudio | 3–6 | 33.33% |
| Seiza vs Devil Jin | 4–4 | 50.00% |
| Seiza vs Azucena | 4–4 | 50.00% |
| Seiza vs Xiaoyu | 5–1 | 83.33% |
| Seiza vs Raven | 4–1 | 80.00% |
| Seiza vs Alisa | 2–2 | 50.00% |
| Seiza vs Zafina | 1–3 | 25.00% |
| Seiza vs Paul | 1–2 | 33.33% |
| Seiza vs Jack-8 | 2–1 | 66.67% |
| Seiza vs Leo | 2–1 | 66.67% |
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.