| Koppyyou vs Kazuya | 59–34 | 63.44% |
| Koppyyou vs Jin | 43–40 | 51.81% |
| Koppyyou vs Dragunov | 42–34 | 55.26% |
| Koppyyou vs Reina | 39–29 | 57.35% |
| Koppyyou vs Law | 31–25 | 55.36% |
| Koppyyou vs Hwoarang | 28–28 | 50.00% |
| Koppyyou vs Steve | 22–32 | 40.74% |
| Koppyyou vs King | 14–36 | 28.00% |
| Koppyyou vs Paul | 13–36 | 26.53% |
| Koppyyou vs Yoshimitsu | 20–25 | 44.44% |
| Koppyyou vs Victor | 18–24 | 42.86% |
| Koppyyou vs Lili | 16–21 | 43.24% |
| Koppyyou vs Jun | 12–24 | 33.33% |
| Koppyyou vs Asuka | 17–18 | 48.57% |
| Koppyyou vs Bryan | 15–19 | 44.12% |
| Koppyyou vs Heihachi | 16–18 | 47.06% |
| Koppyyou vs Devil Jin | 14–16 | 46.67% |
| Koppyyou vs Leo | 14–11 | 56.00% |
| Koppyyou vs Lee | 8–16 | 33.33% |
| Koppyyou vs Kuma | 7–15 | 31.82% |
| Koppyyou vs Jack-8 | 11–8 | 57.89% |
| Koppyyou vs Lars | 8–11 | 42.11% |
| Koppyyou vs Nina | 9–10 | 47.37% |
| Koppyyou vs Alisa | 7–8 | 46.67% |
| Koppyyou vs Eddy | 7–8 | 46.67% |
| Koppyyou vs Claudio | 7–7 | 50.00% |
| Koppyyou vs Xiaoyu | 10–3 | 76.92% |
| Koppyyou vs Feng | 3–9 | 25.00% |
| Koppyyou vs Lidia | 7–4 | 63.64% |
| Koppyyou vs Clive | 7–4 | 63.64% |
| Koppyyou vs Leroy | 4–4 | 50.00% |
| Koppyyou vs Shaheen | 1–6 | 14.29% |
| Koppyyou vs Panda | 4–2 | 66.67% |
| Koppyyou vs Azucena | 2–3 | 40.00% |
| Koppyyou vs Zafina | 3–1 | 75.00% |
| Koppyyou vs Raven | 2–0 | 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.