| Sion909 vs Heihachi | 3–6 | 33.33% |
| Sion909 vs King | 3–5 | 37.50% |
| Sion909 vs Jin | 5–3 | 62.50% |
| Sion909 vs Devil Jin | 7–0 | 100.00% |
| Sion909 vs Zafina | 1–6 | 14.29% |
| Sion909 vs Hwoarang | 3–2 | 60.00% |
| Sion909 vs Steve | 4–1 | 80.00% |
| Sion909 vs Kazuya | 2–2 | 50.00% |
| Sion909 vs Eddy | 3–1 | 75.00% |
| Sion909 vs Clive | 4–0 | 100.00% |
| Sion909 vs Reina | 2–1 | 66.67% |
| Sion909 vs Dragunov | 2–0 | 100.00% |
| Sion909 vs Jun | 2–0 | 100.00% |
| Sion909 vs Paul | 0–2 | 0.00% |
| Sion909 vs Bryan | 0–2 | 0.00% |
| Sion909 vs Azucena | 2–0 | 100.00% |
| Sion909 vs Nina | 0–1 | 0.00% |
| Sion909 vs Jack-8 | 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.