| Ruugan vs Steve | 15–8 | 65.22% |
| Ruugan vs Reina | 11–9 | 55.00% |
| Ruugan vs Clive | 4–13 | 23.53% |
| Ruugan vs Hwoarang | 4–10 | 28.57% |
| Ruugan vs Kazuya | 1–8 | 11.11% |
| Ruugan vs Azucena | 5–4 | 55.56% |
| Ruugan vs Asuka | 3–5 | 37.50% |
| Ruugan vs Heihachi | 2–6 | 25.00% |
| Ruugan vs Lili | 0–6 | 0.00% |
| Ruugan vs Dragunov | 2–4 | 33.33% |
| Ruugan vs Victor | 3–3 | 50.00% |
| Ruugan vs Eddy | 0–6 | 0.00% |
| Ruugan vs Yoshimitsu | 4–1 | 80.00% |
| Ruugan vs Lars | 2–3 | 40.00% |
| Ruugan vs Lee | 2–3 | 40.00% |
| Ruugan vs Devil Jin | 2–2 | 50.00% |
| Ruugan vs Jun | 0–4 | 0.00% |
| Ruugan vs Paul | 2–1 | 66.67% |
| Ruugan vs Jin | 1–2 | 33.33% |
| Ruugan vs Law | 0–2 | 0.00% |
| Ruugan vs Feng | 0–2 | 0.00% |
| Ruugan vs Nina | 1–1 | 50.00% |
| Ruugan vs Zafina | 0–2 | 0.00% |
| Ruugan vs Xiaoyu | 1–0 | 100.00% |
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.