| keio-san vs Hwoarang | 45–38 | 54.22% |
| keio-san vs Bryan | 43–31 | 58.11% |
| keio-san vs Victor | 34–33 | 50.75% |
| keio-san vs Jack-8 | 29–33 | 46.77% |
| keio-san vs Heihachi | 29–33 | 46.77% |
| keio-san vs Zafina | 24–31 | 43.64% |
| keio-san vs Dragunov | 35–19 | 64.81% |
| keio-san vs Lars | 29–25 | 53.70% |
| keio-san vs Azucena | 27–26 | 50.94% |
| keio-san vs Feng | 30–22 | 57.69% |
| keio-san vs Nina | 26–26 | 50.00% |
| keio-san vs Lee | 19–33 | 36.54% |
| keio-san vs Yoshimitsu | 32–19 | 62.75% |
| keio-san vs Steve | 33–18 | 64.71% |
| keio-san vs Lili | 29–22 | 56.86% |
| keio-san vs Paul | 35–15 | 70.00% |
| keio-san vs Reina | 25–23 | 52.08% |
| keio-san vs King | 21–24 | 46.67% |
| keio-san vs Xiaoyu | 22–22 | 50.00% |
| keio-san vs Leroy | 22–21 | 51.16% |
| keio-san vs Asuka | 25–16–1 | 60.98% |
| keio-san vs Raven | 22–20 | 52.38% |
| keio-san vs Law | 29–12 | 70.73% |
| keio-san vs Kazuya | 28–9 | 75.68% |
| keio-san vs Alisa | 21–12 | 63.64% |
| keio-san vs Claudio | 19–14 | 57.58% |
| keio-san vs Leo | 17–15 | 53.12% |
| keio-san vs Devil Jin | 16–14 | 53.33% |
| keio-san vs Jin | 16–12 | 57.14% |
| keio-san vs Eddy | 17–9 | 65.38% |
| keio-san vs Jun | 5–18 | 21.74% |
| keio-san vs Kuma | 12–9 | 57.14% |
| keio-san vs Shaheen | 10–3 | 76.92% |
| keio-san vs Panda | 10–2 | 83.33% |
| keio-san vs Lidia | 4–3 | 57.14% |
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.