| Koper vs Jin | 24–15 | 61.54% |
| Koper vs Kazuya | 19–16 | 54.29% |
| Koper vs Miary Zo | 18–17 | 51.43% |
| Koper vs Steve | 21–10 | 67.74% |
| Koper vs Heihachi | 17–7 | 70.83% |
| Koper vs Reina | 17–5 | 77.27% |
| Koper vs Law | 14–5 | 73.68% |
| Koper vs King | 9–10 | 47.37% |
| Koper vs Azucena | 9–8 | 52.94% |
| Koper vs Claudio | 8–6 | 57.14% |
| Koper vs Leroy | 9–5 | 64.29% |
| Koper vs Lili | 8–5 | 61.54% |
| Koper vs Bryan | 3–9 | 25.00% |
| Koper vs Paul | 7–4 | 63.64% |
| Koper vs Yoshimitsu | 5–6 | 45.45% |
| Koper vs Lars | 6–5 | 54.55% |
| Koper vs Hwoarang | 4–6 | 40.00% |
| Koper vs Armor King | 6–4 | 60.00% |
| Koper vs Xiaoyu | 6–3 | 66.67% |
| Koper vs Jun | 5–3 | 62.50% |
| Koper vs Dragunov | 4–3 | 57.14% |
| Koper vs Leo | 3–4 | 42.86% |
| Koper vs Lee | 4–3 | 57.14% |
| Koper vs Victor | 4–3 | 57.14% |
| Koper vs Eddy | 3–4 | 42.86% |
| Koper vs Devil Jin | 5–1 | 83.33% |
| Koper vs Alisa | 4–2 | 66.67% |
| Koper vs Anna | 5–1 | 83.33% |
| Koper vs Nina | 4–1 | 80.00% |
| Koper vs Feng | 4–0 | 100.00% |
| Koper vs Raven | 2–2 | 50.00% |
| Koper vs Jack-8 | 1–2 | 33.33% |
| Koper vs Clive | 3–0 | 100.00% |
| Koper vs Fahkumram | 0–3 | 0.00% |
| Koper vs Shaheen | 1–1 | 50.00% |
| Koper vs Asuka | 0–1 | 0.00% |
| Koper vs Lidia | 1–0 | 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.