| Roman vs Jin | 33–20 | 62.26% |
| Roman vs Lidia | 27–20 | 57.45% |
| Roman vs King | 25–20 | 55.56% |
| Roman vs Bryan | 17–21 | 44.74% |
| Roman vs Kazuya | 19–18 | 51.35% |
| Roman vs Reina | 20–15 | 57.14% |
| Roman vs Law | 14–16 | 46.67% |
| Roman vs Lili | 17–13 | 56.67% |
| Roman vs Hwoarang | 15–12 | 55.56% |
| Roman vs Kuma | 14–13 | 51.85% |
| Roman vs Paul | 16–9 | 64.00% |
| Roman vs Victor | 14–9 | 60.87% |
| Roman vs Yoshimitsu | 8–14 | 36.36% |
| Roman vs Jun | 12–10 | 54.55% |
| Roman vs Eddy | 11–11 | 50.00% |
| Roman vs Xiaoyu | 15–6 | 71.43% |
| Roman vs Steve | 11–9 | 55.00% |
| Roman vs Lars | 9–9 | 50.00% |
| Roman vs Nina | 12–6 | 66.67% |
| Roman vs Azucena | 11–7 | 61.11% |
| Roman vs Dragunov | 13–2 | 86.67% |
| Roman vs Asuka | 8–6 | 57.14% |
| Roman vs Leo | 8–2 | 80.00% |
| Roman vs Jack-8 | 7–2 | 77.78% |
| Roman vs Shaheen | 3–6 | 33.33% |
| Roman vs Zafina | 4–5 | 44.44% |
| Roman vs Leroy | 4–4 | 50.00% |
| Roman vs Heihachi | 1–7 | 12.50% |
| Roman vs Raven | 4–2 | 66.67% |
| Roman vs Devil Jin | 3–2 | 60.00% |
| Roman vs Feng | 3–2 | 60.00% |
| Roman vs Alisa | 3–2 | 60.00% |
| Roman vs Clive | 2–3 | 40.00% |
| Roman vs Claudio | 2–0 | 100.00% |
| Roman vs Lee | 1–1 | 50.00% |
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.