| Koppa vs Jin | 25–28 | 47.17% |
| Koppa vs Reina | 20–19 | 51.28% |
| Koppa vs Kazuya | 19–16 | 54.29% |
| Koppa vs Law | 14–19 | 42.42% |
| Koppa vs King | 7–20 | 25.93% |
| Koppa vs Paul | 9–14 | 39.13% |
| Koppa vs Yoshimitsu | 11–10 | 52.38% |
| Koppa vs Steve | 12–8 | 60.00% |
| Koppa vs Eddy | 8–12 | 40.00% |
| Koppa vs Victor | 9–10 | 47.37% |
| Koppa vs Lili | 11–7 | 61.11% |
| Koppa vs Dragunov | 6–12 | 33.33% |
| Koppa vs Devil Jin | 4–12 | 25.00% |
| Koppa vs Jun | 7–9 | 43.75% |
| Koppa vs Hwoarang | 3–10 | 23.08% |
| Koppa vs Bryan | 9–4 | 69.23% |
| Koppa vs Leroy | 5–7 | 41.67% |
| Koppa vs Nina | 3–7 | 30.00% |
| Koppa vs Feng | 4–5 | 44.44% |
| Koppa vs Lee | 4–5 | 44.44% |
| Koppa vs Asuka | 6–2 | 75.00% |
| Koppa vs Raven | 3–5 | 37.50% |
| Koppa vs Lars | 4–3 | 57.14% |
| Koppa vs Clive | 5–2 | 71.43% |
| Koppa vs Jack-8 | 2–4 | 33.33% |
| Koppa vs Alisa | 5–1 | 83.33% |
| Koppa vs Anna | 3–3 | 50.00% |
| Koppa vs Lidia | 4–1 | 80.00% |
| Koppa vs Xiaoyu | 2–2 | 50.00% |
| Koppa vs Zafina | 2–2 | 50.00% |
| Koppa vs Azucena | 1–3 | 25.00% |
| Koppa vs Leo | 2–0 | 100.00% |
| Koppa vs Claudio | 0–2 | 0.00% |
| Koppa vs Shaheen | 0–1 | 0.00% |
| Koppa vs Armor King | 0–1 | 0.00% |
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.