| Rivermrj21 vs Jin | 176–148 | 54.32% |
| Rivermrj21 vs Kazuya | 163–154 | 51.42% |
| Rivermrj21 vs Hwoarang | 147–117 | 55.68% |
| Rivermrj21 vs Bryan | 150–93 | 61.73% |
| Rivermrj21 vs King | 108–102 | 51.43% |
| Rivermrj21 vs Dragunov | 96–91 | 51.34% |
| Rivermrj21 vs Steve | 109–65 | 62.64% |
| Rivermrj21 vs Law | 104–68 | 60.47% |
| Rivermrj21 vs Reina | 92–73 | 55.76% |
| Rivermrj21 vs Paul | 95–65 | 59.38% |
| Rivermrj21 vs Yoshimitsu | 81–68 | 54.36% |
| Rivermrj21 vs Lili | 80–66 | 54.79% |
| Rivermrj21 vs Devil Jin | 68–65 | 51.13% |
| Rivermrj21 vs Armor King | 58–54 | 51.79% |
| Rivermrj21 vs Jun | 60–50 | 54.55% |
| Rivermrj21 vs Jack-8 | 51–58 | 46.79% |
| Rivermrj21 vs Lee | 56–52–1 | 51.85% |
| Rivermrj21 vs Heihachi | 49–58 | 45.79% |
| Rivermrj21 vs Xiaoyu | 55–49 | 52.88% |
| Rivermrj21 vs Feng | 57–47 | 54.81% |
| Rivermrj21 vs Nina | 59–44 | 57.28% |
| Rivermrj21 vs Lars | 37–62 | 37.37% |
| Rivermrj21 vs Azucena | 56–38 | 59.57% |
| Rivermrj21 vs Raven | 43–50 | 46.24% |
| Rivermrj21 vs Asuka | 39–34 | 53.42% |
| Rivermrj21 vs Victor | 37–36 | 50.68% |
| Rivermrj21 vs Leo | 36–35 | 50.70% |
| Rivermrj21 vs Alisa | 31–35 | 46.97% |
| Rivermrj21 vs Anna | 40–23 | 63.49% |
| Rivermrj21 vs Lidia | 19–39 | 32.76% |
| Rivermrj21 vs Kuma | 24–32 | 42.86% |
| Rivermrj21 vs Eddy | 20–35 | 36.36% |
| Rivermrj21 vs Shaheen | 27–24 | 52.94% |
| Rivermrj21 vs Fahkumram | 29–20 | 59.18% |
| Rivermrj21 vs Zafina | 17–29 | 36.96% |
| Rivermrj21 vs Claudio | 18–27 | 40.00% |
| Rivermrj21 vs Clive | 26–19 | 57.78% |
| Rivermrj21 vs Leroy | 18–19 | 48.65% |
| Rivermrj21 vs Miary Zo | 21–16 | 56.76% |
| Rivermrj21 vs Panda | 7–11 | 38.89% |
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.