| Ronaldo vs Reina | 21–8 | 72.41% |
| Ronaldo vs Jin | 19–9 | 67.86% |
| Ronaldo vs Kazuya | 11–14 | 44.00% |
| Ronaldo vs Lili | 14–11 | 56.00% |
| Ronaldo vs King | 14–6 | 70.00% |
| Ronaldo vs Dragunov | 7–12 | 36.84% |
| Ronaldo vs Lidia | 11–7 | 61.11% |
| Ronaldo vs Steve | 14–3 | 82.35% |
| Ronaldo vs Paul | 8–8 | 50.00% |
| Ronaldo vs Yoshimitsu | 8–4 | 66.67% |
| Ronaldo vs Alisa | 5–7 | 41.67% |
| Ronaldo vs Victor | 3–8 | 27.27% |
| Ronaldo vs Claudio | 3–7 | 30.00% |
| Ronaldo vs Law | 4–5 | 44.44% |
| Ronaldo vs Bryan | 5–3 | 62.50% |
| Ronaldo vs Leo | 1–6 | 14.29% |
| Ronaldo vs Shaheen | 4–3 | 57.14% |
| Ronaldo vs Jun | 3–4 | 42.86% |
| Ronaldo vs Eddy | 4–3 | 57.14% |
| Ronaldo vs Lee | 3–3 | 50.00% |
| Ronaldo vs Hwoarang | 2–3 | 40.00% |
| Ronaldo vs Xiaoyu | 4–1 | 80.00% |
| Ronaldo vs Asuka | 4–1 | 80.00% |
| Ronaldo vs Kuma | 4–1 | 80.00% |
| Ronaldo vs Devil Jin | 1–3 | 25.00% |
| Ronaldo vs Feng | 4–0 | 100.00% |
| Ronaldo vs Nina | 3–0 | 100.00% |
| Ronaldo vs Leroy | 1–2 | 33.33% |
| Ronaldo vs Jack-8 | 1–1 | 50.00% |
| Ronaldo vs Lars | 0–2 | 0.00% |
| Ronaldo vs Azucena | 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.