| Rumi vs Kazuya | 42–57 | 42.42% |
| Rumi vs Jin | 36–39 | 48.00% |
| Rumi vs Hwoarang | 28–30 | 48.28% |
| Rumi vs Reina | 12–32 | 27.27% |
| Rumi vs Lili | 16–26 | 38.10% |
| Rumi vs Heihachi | 16–22 | 42.11% |
| Rumi vs Steve | 16–21 | 43.24% |
| Rumi vs King | 10–26 | 27.78% |
| Rumi vs Bryan | 7–24 | 22.58% |
| Rumi vs Asuka | 13–18 | 41.94% |
| Rumi vs Law | 14–16 | 46.67% |
| Rumi vs Lee | 15–15 | 50.00% |
| Rumi vs Dragunov | 14–15 | 48.28% |
| Rumi vs Nina | 11–16 | 40.74% |
| Rumi vs Jun | 7–20 | 25.93% |
| Rumi vs Paul | 9–17 | 34.62% |
| Rumi vs Alisa | 9–17 | 34.62% |
| Rumi vs Xiaoyu | 12–12 | 50.00% |
| Rumi vs Lars | 11–12 | 47.83% |
| Rumi vs Victor | 11–12 | 47.83% |
| Rumi vs Devil Jin | 6–13 | 31.58% |
| Rumi vs Eddy | 2–17 | 10.53% |
| Rumi vs Yoshimitsu | 5–12 | 29.41% |
| Rumi vs Feng | 9–6 | 60.00% |
| Rumi vs Azucena | 7–8 | 46.67% |
| Rumi vs Clive | 3–7 | 30.00% |
| Rumi vs Claudio | 2–6 | 25.00% |
| Rumi vs Leroy | 2–6 | 25.00% |
| Rumi vs Jack-8 | 1–6 | 14.29% |
| Rumi vs Kuma | 3–4 | 42.86% |
| Rumi vs Panda | 4–3 | 57.14% |
| Rumi vs Raven | 2–5 | 28.57% |
| Rumi vs Leo | 1–4 | 20.00% |
| Rumi vs Zafina | 2–3 | 40.00% |
| Rumi vs Lidia | 1–4 | 20.00% |
| Rumi vs Armor King | 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.