| Rounin vs King | 23–21 | 52.27% |
| Rounin vs Hwoarang | 28–15 | 65.12% |
| Rounin vs Paul | 19–17 | 52.78% |
| Rounin vs Asuka | 18–17 | 51.43% |
| Rounin vs Bryan | 16–15 | 51.61% |
| Rounin vs Feng | 15–14 | 51.72% |
| Rounin vs Jin | 20–8 | 71.43% |
| Rounin vs Kazuya | 18–10 | 64.29% |
| Rounin vs Dragunov | 13–13 | 50.00% |
| Rounin vs Devil Jin | 17–8 | 68.00% |
| Rounin vs Law | 12–12 | 50.00% |
| Rounin vs Azucena | 15–9 | 62.50% |
| Rounin vs Eddy | 13–11 | 54.17% |
| Rounin vs Lili | 16–7 | 69.57% |
| Rounin vs Nina | 11–12 | 47.83% |
| Rounin vs Steve | 12–10 | 54.55% |
| Rounin vs Xiaoyu | 9–12 | 42.86% |
| Rounin vs Victor | 9–10 | 47.37% |
| Rounin vs Jack-8 | 9–9 | 50.00% |
| Rounin vs Alisa | 6–11 | 35.29% |
| Rounin vs Yoshimitsu | 7–7–1 | 50.00% |
| Rounin vs Zafina | 7–8 | 46.67% |
| Rounin vs Raven | 8–7 | 53.33% |
| Rounin vs Shaheen | 5–9 | 35.71% |
| Rounin vs Kuma | 6–8 | 42.86% |
| Rounin vs Reina | 10–4 | 71.43% |
| Rounin vs Leo | 3–10 | 23.08% |
| Rounin vs Lars | 7–6 | 53.85% |
| Rounin vs Jun | 6–6 | 50.00% |
| Rounin vs Lee | 5–4 | 55.56% |
| Rounin vs Leroy | 4–5 | 44.44% |
| Rounin vs Lidia | 2–5 | 28.57% |
| Rounin vs Claudio | 2–3 | 40.00% |
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.