| Ronaldo vs King | 20–21 | 48.78% |
| Ronaldo vs Law | 16–23 | 41.03% |
| Ronaldo vs Kazuya | 16–14 | 53.33% |
| Ronaldo vs Reina | 18–11 | 62.07% |
| Ronaldo vs Lili | 12–13 | 48.00% |
| Ronaldo vs Jun | 12–11 | 52.17% |
| Ronaldo vs Eddy | 8–14 | 36.36% |
| Ronaldo vs Steve | 8–13 | 38.10% |
| Ronaldo vs Azucena | 12–9 | 57.14% |
| Ronaldo vs Victor | 10–7 | 58.82% |
| Ronaldo vs Jin | 6–8 | 42.86% |
| Ronaldo vs Hwoarang | 3–9 | 25.00% |
| Ronaldo vs Leroy | 9–3 | 75.00% |
| Ronaldo vs Yoshimitsu | 6–5 | 54.55% |
| Ronaldo vs Lars | 2–9 | 18.18% |
| Ronaldo vs Paul | 5–4 | 55.56% |
| Ronaldo vs Leo | 6–3 | 66.67% |
| Ronaldo vs Bryan | 4–4 | 50.00% |
| Ronaldo vs Nina | 4–4 | 50.00% |
| Ronaldo vs Alisa | 5–2 | 71.43% |
| Ronaldo vs Lee | 3–4 | 42.86% |
| Ronaldo vs Dragunov | 1–5 | 16.67% |
| Ronaldo vs Asuka | 2–3 | 40.00% |
| Ronaldo vs Claudio | 4–1 | 80.00% |
| Ronaldo vs Feng | 1–3 | 25.00% |
| Ronaldo vs Heihachi | 1–3 | 25.00% |
| Ronaldo vs Jack-8 | 1–2 | 33.33% |
| Ronaldo vs Xiaoyu | 1–1 | 50.00% |
| Ronaldo vs Devil Jin | 2–0 | 100.00% |
| Ronaldo vs Lidia | 1–1 | 50.00% |
| Ronaldo vs Clive | 1–1 | 50.00% |
| Ronaldo vs Shaheen | 1–0 | 100.00% |
| Ronaldo vs Zafina | 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.