| Romildinho vs Jin | 25–23 | 52.08% |
| Romildinho vs Reina | 27–16 | 62.79% |
| Romildinho vs King | 23–19 | 54.76% |
| Romildinho vs Clive | 20–22 | 47.62% |
| Romildinho vs Asuka | 17–10 | 62.96% |
| Romildinho vs Lili | 12–14 | 46.15% |
| Romildinho vs Bryan | 11–11 | 50.00% |
| Romildinho vs Steve | 13–9 | 59.09% |
| Romildinho vs Dragunov | 5–17 | 22.73% |
| Romildinho vs Paul | 9–11 | 45.00% |
| Romildinho vs Eddy | 9–11 | 45.00% |
| Romildinho vs Kazuya | 5–14 | 26.32% |
| Romildinho vs Lidia | 11–8 | 57.89% |
| Romildinho vs Hwoarang | 3–13 | 18.75% |
| Romildinho vs Lee | 8–8 | 50.00% |
| Romildinho vs Jun | 4–11 | 26.67% |
| Romildinho vs Yoshimitsu | 7–7 | 50.00% |
| Romildinho vs Feng | 8–5 | 61.54% |
| Romildinho vs Alisa | 3–9 | 25.00% |
| Romildinho vs Zafina | 3–8 | 27.27% |
| Romildinho vs Law | 4–6 | 40.00% |
| Romildinho vs Leo | 7–3 | 70.00% |
| Romildinho vs Claudio | 6–4 | 60.00% |
| Romildinho vs Nina | 6–3 | 66.67% |
| Romildinho vs Lars | 3–5 | 37.50% |
| Romildinho vs Victor | 3–5 | 37.50% |
| Romildinho vs Xiaoyu | 4–3 | 57.14% |
| Romildinho vs Devil Jin | 4–3 | 57.14% |
| Romildinho vs Azucena | 2–3 | 40.00% |
| Romildinho vs Heihachi | 4–1 | 80.00% |
| Romildinho vs Shaheen | 0–4 | 0.00% |
| Romildinho vs Kuma | 2–2 | 50.00% |
| Romildinho vs Jack-8 | 0–2 | 0.00% |
| Romildinho vs Panda | 2–0 | 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.