| Seiken vs Jin | 4–3 | 57.14% |
| Seiken vs Paul | 2–4 | 33.33% |
| Seiken vs Kazuya | 3–2 | 60.00% |
| Seiken vs King | 1–3 | 25.00% |
| Seiken vs Yoshimitsu | 1–3 | 25.00% |
| Seiken vs Devil Jin | 3–1 | 75.00% |
| Seiken vs Lili | 2–2 | 50.00% |
| Seiken vs Law | 3–0 | 100.00% |
| Seiken vs Nina | 1–2 | 33.33% |
| Seiken vs Reina | 2–1 | 66.67% |
| Seiken vs Hwoarang | 1–1 | 50.00% |
| Seiken vs Xiaoyu | 2–0 | 100.00% |
| Seiken vs Feng | 0–2 | 0.00% |
| Seiken vs Lars | 1–1 | 50.00% |
| Seiken vs Lee | 2–0 | 100.00% |
| Seiken vs Leroy | 2–0 | 100.00% |
| Seiken vs Jun | 2–0 | 100.00% |
| Seiken vs Azucena | 0–2 | 0.00% |
| Seiken vs Eddy | 0–2 | 0.00% |
| Seiken vs Steve | 0–1 | 0.00% |
| Seiken vs Jack-8 | 0–1 | 0.00% |
| Seiken vs Leo | 0–1 | 0.00% |
| Seiken vs Alisa | 0–1 | 0.00% |
| Seiken vs Victor | 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.