| Rosa_Roja vs King | 34–31 | 52.31% |
| Rosa_Roja vs Jin | 21–38 | 35.59% |
| Rosa_Roja vs Reina | 20–34 | 37.04% |
| Rosa_Roja vs Kazuya | 16–30 | 34.78% |
| Rosa_Roja vs Hwoarang | 14–23 | 37.84% |
| Rosa_Roja vs Steve | 18–18 | 50.00% |
| Rosa_Roja vs Bryan | 10–24 | 29.41% |
| Rosa_Roja vs Dragunov | 15–18 | 45.45% |
| Rosa_Roja vs Eddy | 14–18 | 43.75% |
| Rosa_Roja vs Azucena | 12–16 | 42.86% |
| Rosa_Roja vs Law | 10–16 | 38.46% |
| Rosa_Roja vs Leroy | 8–18 | 30.77% |
| Rosa_Roja vs Lars | 4–19 | 17.39% |
| Rosa_Roja vs Lili | 11–11 | 50.00% |
| Rosa_Roja vs Paul | 7–13 | 35.00% |
| Rosa_Roja vs Yoshimitsu | 10–10 | 50.00% |
| Rosa_Roja vs Jack-8 | 8–12 | 40.00% |
| Rosa_Roja vs Nina | 8–12 | 40.00% |
| Rosa_Roja vs Victor | 7–12 | 36.84% |
| Rosa_Roja vs Leo | 7–8 | 46.67% |
| Rosa_Roja vs Lee | 4–11 | 26.67% |
| Rosa_Roja vs Clive | 7–7 | 50.00% |
| Rosa_Roja vs Asuka | 5–8 | 38.46% |
| Rosa_Roja vs Jun | 6–7 | 46.15% |
| Rosa_Roja vs Feng | 2–7 | 22.22% |
| Rosa_Roja vs Kuma | 0–9 | 0.00% |
| Rosa_Roja vs Xiaoyu | 6–2 | 75.00% |
| Rosa_Roja vs Fahkumram | 3–5 | 37.50% |
| Rosa_Roja vs Alisa | 3–3 | 50.00% |
| Rosa_Roja vs Zafina | 2–4 | 33.33% |
| Rosa_Roja vs Raven | 5–1 | 83.33% |
| Rosa_Roja vs Devil Jin | 4–1 | 80.00% |
| Rosa_Roja vs Claudio | 0–5 | 0.00% |
| Rosa_Roja vs Heihachi | 2–3 | 40.00% |
| Rosa_Roja vs Anna | 3–2 | 60.00% |
| Rosa_Roja vs Shaheen | 1–2 | 33.33% |
| Rosa_Roja vs Panda | 0–3 | 0.00% |
| Rosa_Roja vs Lidia | 2–1 | 66.67% |
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.