| Ryo_Sei vs Kazuya | 52–43 | 54.74% |
| Ryo_Sei vs King | 61–28 | 68.54% |
| Ryo_Sei vs Jin | 49–37 | 56.98% |
| Ryo_Sei vs Hwoarang | 51–27 | 65.38% |
| Ryo_Sei vs Paul | 33–38 | 46.48% |
| Ryo_Sei vs Bryan | 25–40 | 38.46% |
| Ryo_Sei vs Dragunov | 37–26 | 58.73% |
| Ryo_Sei vs Heihachi | 31–30 | 50.82% |
| Ryo_Sei vs Law | 42–17 | 71.19% |
| Ryo_Sei vs Steve | 26–29 | 47.27% |
| Ryo_Sei vs Lee | 32–21 | 60.38% |
| Ryo_Sei vs Reina | 34–16 | 68.00% |
| Ryo_Sei vs Azucena | 23–18 | 56.10% |
| Ryo_Sei vs Devil Jin | 17–22 | 43.59% |
| Ryo_Sei vs Lidia | 17–18 | 48.57% |
| Ryo_Sei vs Yoshimitsu | 11–22 | 33.33% |
| Ryo_Sei vs Victor | 19–12 | 61.29% |
| Ryo_Sei vs Claudio | 9–21 | 30.00% |
| Ryo_Sei vs Nina | 18–12 | 60.00% |
| Ryo_Sei vs Jun | 17–12 | 58.62% |
| Ryo_Sei vs Feng | 17–11 | 60.71% |
| Ryo_Sei vs Raven | 18–9 | 66.67% |
| Ryo_Sei vs Asuka | 9–14 | 39.13% |
| Ryo_Sei vs Zafina | 9–14 | 39.13% |
| Ryo_Sei vs Lars | 16–6 | 72.73% |
| Ryo_Sei vs Jack-8 | 5–16 | 23.81% |
| Ryo_Sei vs Leroy | 8–13 | 38.10% |
| Ryo_Sei vs Eddy | 13–8 | 61.90% |
| Ryo_Sei vs Xiaoyu | 7–12 | 36.84% |
| Ryo_Sei vs Alisa | 8–10 | 44.44% |
| Ryo_Sei vs Leo | 12–5 | 70.59% |
| Ryo_Sei vs Kuma | 7–9 | 43.75% |
| Ryo_Sei vs Clive | 7–9 | 43.75% |
| Ryo_Sei vs Shaheen | 8–6 | 57.14% |
| Ryo_Sei vs Lili | 2–10 | 16.67% |
| Ryo_Sei vs Panda | 2–3 | 40.00% |
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.