| Roronoa Rosko vs Jin | 6–8 | 42.86% |
| Roronoa Rosko vs Clive | 6–8 | 42.86% |
| Roronoa Rosko vs Reina | 3–8 | 27.27% |
| Roronoa Rosko vs Heihachi | 8–2 | 80.00% |
| Roronoa Rosko vs Kazuya | 6–2 | 75.00% |
| Roronoa Rosko vs Alisa | 3–3 | 50.00% |
| Roronoa Rosko vs King | 4–1 | 80.00% |
| Roronoa Rosko vs Hwoarang | 3–2 | 60.00% |
| Roronoa Rosko vs Feng | 2–2 | 50.00% |
| Roronoa Rosko vs Lili | 3–1 | 75.00% |
| Roronoa Rosko vs Nina | 1–3 | 25.00% |
| Roronoa Rosko vs Raven | 3–1 | 75.00% |
| Roronoa Rosko vs Law | 2–1 | 66.67% |
| Roronoa Rosko vs Dragunov | 3–0 | 100.00% |
| Roronoa Rosko vs Yoshimitsu | 1–1 | 50.00% |
| Roronoa Rosko vs Jack-8 | 2–0 | 100.00% |
| Roronoa Rosko vs Lidia | 0–2 | 0.00% |
| Roronoa Rosko vs Paul | 0–1 | 0.00% |
| Roronoa Rosko vs Leo | 0–1 | 0.00% |
| Roronoa Rosko vs Kuma | 1–0 | 100.00% |
| Roronoa Rosko vs Jun | 1–0 | 100.00% |
| Roronoa Rosko vs Azucena | 0–1 | 0.00% |
| Roronoa Rosko vs Eddy | 0–1 | 0.00% |
| Roronoa Rosko vs Anna | 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.