| River__12 vs Kazuya | 31–19 | 62.00% |
| River__12 vs Dragunov | 21–27 | 43.75% |
| River__12 vs Paul | 18–21 | 46.15% |
| River__12 vs Hwoarang | 21–15 | 58.33% |
| River__12 vs Reina | 18–16 | 52.94% |
| River__12 vs Bryan | 18–14 | 56.25% |
| River__12 vs King | 19–11 | 63.33% |
| River__12 vs Azucena | 10–20 | 33.33% |
| River__12 vs Heihachi | 15–11 | 57.69% |
| River__12 vs Jin | 13–12 | 52.00% |
| River__12 vs Asuka | 13–12 | 52.00% |
| River__12 vs Victor | 13–12 | 52.00% |
| River__12 vs Law | 14–9 | 60.87% |
| River__12 vs Devil Jin | 10–12 | 45.45% |
| River__12 vs Clive | 14–8 | 63.64% |
| River__12 vs Yoshimitsu | 5–14 | 26.32% |
| River__12 vs Steve | 11–8 | 57.89% |
| River__12 vs Lili | 6–13 | 31.58% |
| River__12 vs Nina | 8–11 | 42.11% |
| River__12 vs Claudio | 9–9 | 50.00% |
| River__12 vs Jun | 9–8 | 52.94% |
| River__12 vs Xiaoyu | 12–3 | 80.00% |
| River__12 vs Feng | 9–4 | 69.23% |
| River__12 vs Lee | 3–9 | 25.00% |
| River__12 vs Eddy | 5–6 | 45.45% |
| River__12 vs Kuma | 7–3 | 70.00% |
| River__12 vs Alisa | 3–6 | 33.33% |
| River__12 vs Zafina | 1–8 | 11.11% |
| River__12 vs Lidia | 4–5 | 44.44% |
| River__12 vs Leo | 4–4 | 50.00% |
| River__12 vs Lars | 2–6 | 25.00% |
| River__12 vs Shaheen | 4–2 | 66.67% |
| River__12 vs Leroy | 4–2 | 66.67% |
| River__12 vs Jack-8 | 0–5 | 0.00% |
| River__12 vs Panda | 0–5 | 0.00% |
| River__12 vs Raven | 0–1 | 0.00% |
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.