| Ronaldo R9 vs Jin | 36–7 | 83.72% |
| Ronaldo R9 vs Kazuya | 31–7 | 81.58% |
| Ronaldo R9 vs King | 26–8 | 76.47% |
| Ronaldo R9 vs Steve | 25–7 | 78.12% |
| Ronaldo R9 vs Hwoarang | 21–4 | 84.00% |
| Ronaldo R9 vs Yoshimitsu | 14–9 | 60.87% |
| Ronaldo R9 vs Law | 16–3 | 84.21% |
| Ronaldo R9 vs Dragunov | 16–3 | 84.21% |
| Ronaldo R9 vs Lee | 13–5 | 72.22% |
| Ronaldo R9 vs Leroy | 11–7 | 61.11% |
| Ronaldo R9 vs Asuka | 14–3 | 82.35% |
| Ronaldo R9 vs Lili | 15–2 | 88.24% |
| Ronaldo R9 vs Paul | 13–3 | 81.25% |
| Ronaldo R9 vs Bryan | 12–2 | 85.71% |
| Ronaldo R9 vs Lars | 13–0 | 100.00% |
| Ronaldo R9 vs Claudio | 9–4 | 69.23% |
| Ronaldo R9 vs Azucena | 9–4 | 69.23% |
| Ronaldo R9 vs Alisa | 12–0 | 100.00% |
| Ronaldo R9 vs Reina | 9–2 | 81.82% |
| Ronaldo R9 vs Heihachi | 5–6 | 45.45% |
| Ronaldo R9 vs Xiaoyu | 10–0 | 100.00% |
| Ronaldo R9 vs Nina | 7–3 | 70.00% |
| Ronaldo R9 vs Jack-8 | 3–6 | 33.33% |
| Ronaldo R9 vs Devil Jin | 3–6 | 33.33% |
| Ronaldo R9 vs Armor King | 8–1 | 88.89% |
| Ronaldo R9 vs Feng | 7–1 | 87.50% |
| Ronaldo R9 vs Jun | 8–0 | 100.00% |
| Ronaldo R9 vs Kuma | 7–0 | 100.00% |
| Ronaldo R9 vs Victor | 5–2 | 71.43% |
| Ronaldo R9 vs Raven | 5–2 | 71.43% |
| Ronaldo R9 vs Eddy | 6–0 | 100.00% |
| Ronaldo R9 vs Clive | 5–1 | 83.33% |
| Ronaldo R9 vs Miary Zo | 6–0 | 100.00% |
| Ronaldo R9 vs Shaheen | 5–0 | 100.00% |
| Ronaldo R9 vs Fahkumram | 4–1 | 80.00% |
| Ronaldo R9 vs Leo | 4–0 | 100.00% |
| Ronaldo R9 vs Zafina | 1–0 | 100.00% |
| Ronaldo R9 vs Lidia | 1–0 | 100.00% |
| Ronaldo R9 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.