| Seirou vs Hwoarang | 6–12 | 33.33% |
| Seirou vs Jin | 9–9 | 50.00% |
| Seirou vs Kazuya | 3–15 | 16.67% |
| Seirou vs Yoshimitsu | 5–9 | 35.71% |
| Seirou vs King | 4–9 | 30.77% |
| Seirou vs Reina | 6–5 | 54.55% |
| Seirou vs Paul | 2–6 | 25.00% |
| Seirou vs Steve | 3–4 | 42.86% |
| Seirou vs Asuka | 2–5 | 28.57% |
| Seirou vs Leo | 2–5 | 28.57% |
| Seirou vs Zafina | 5–0 | 100.00% |
| Seirou vs Jun | 3–2 | 60.00% |
| Seirou vs Nina | 0–4 | 0.00% |
| Seirou vs Leroy | 4–0 | 100.00% |
| Seirou vs Heihachi | 2–2 | 50.00% |
| Seirou vs Bryan | 1–2 | 33.33% |
| Seirou vs Jack-8 | 1–2 | 33.33% |
| Seirou vs Devil Jin | 1–2 | 33.33% |
| Seirou vs Lili | 1–2 | 33.33% |
| Seirou vs Claudio | 1–2 | 33.33% |
| Seirou vs Lee | 2–1 | 66.67% |
| Seirou vs Kuma | 2–1 | 66.67% |
| Seirou vs Azucena | 2–1 | 66.67% |
| Seirou vs Victor | 0–3 | 0.00% |
| Seirou vs Law | 0–2 | 0.00% |
| Seirou vs Panda | 0–2 | 0.00% |
| Seirou vs Raven | 0–2 | 0.00% |
| Seirou vs Lidia | 2–0 | 100.00% |
| Seirou 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.