| Seyajin vs King | 7–9 | 43.75% |
| Seyajin vs Claudio | 3–4 | 42.86% |
| Seyajin vs Nina | 3–4 | 42.86% |
| Seyajin vs Raven | 2–5 | 28.57% |
| Seyajin vs Armor King | 6–1 | 85.71% |
| Seyajin vs Steve | 4–2 | 66.67% |
| Seyajin vs Dragunov | 4–2 | 66.67% |
| Seyajin vs Lidia | 5–1 | 83.33% |
| Seyajin vs Yoshimitsu | 2–2 | 50.00% |
| Seyajin vs Jin | 1–3 | 25.00% |
| Seyajin vs Lili | 2–2 | 50.00% |
| Seyajin vs Alisa | 2–2 | 50.00% |
| Seyajin vs Reina | 2–2 | 50.00% |
| Seyajin vs Azucena | 2–2 | 50.00% |
| Seyajin vs Victor | 2–2 | 50.00% |
| Seyajin vs Law | 1–2 | 33.33% |
| Seyajin vs Hwoarang | 1–2 | 33.33% |
| Seyajin vs Kazuya | 3–0 | 100.00% |
| Seyajin vs Asuka | 0–3 | 0.00% |
| Seyajin vs Devil Jin | 2–1 | 66.67% |
| Seyajin vs Shaheen | 2–1 | 66.67% |
| Seyajin vs Heihachi | 2–0 | 100.00% |
| Seyajin vs Anna | 2–0 | 100.00% |
| Seyajin vs Lars | 1–0 | 100.00% |
| Seyajin vs Eddy | 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.