| Kossomateur vs Jin | 13–15 | 46.43% |
| Kossomateur vs Kazuya | 13–14 | 48.15% |
| Kossomateur vs King | 10–11 | 47.62% |
| Kossomateur vs Reina | 11–10 | 52.38% |
| Kossomateur vs Steve | 13–6 | 68.42% |
| Kossomateur vs Dragunov | 13–6 | 68.42% |
| Kossomateur vs Hwoarang | 11–7 | 61.11% |
| Kossomateur vs Eddy | 8–9 | 47.06% |
| Kossomateur vs Lili | 10–4 | 71.43% |
| Kossomateur vs Lee | 7–7 | 50.00% |
| Kossomateur vs Jun | 8–6 | 57.14% |
| Kossomateur vs Lars | 5–8 | 38.46% |
| Kossomateur vs Alisa | 8–5 | 61.54% |
| Kossomateur vs Victor | 8–5 | 61.54% |
| Kossomateur vs Law | 3–8 | 27.27% |
| Kossomateur vs Yoshimitsu | 6–4 | 60.00% |
| Kossomateur vs Bryan | 4–6 | 40.00% |
| Kossomateur vs Asuka | 2–6 | 25.00% |
| Kossomateur vs Shaheen | 4–3 | 57.14% |
| Kossomateur vs Azucena | 4–3 | 57.14% |
| Kossomateur vs Claudio | 5–1 | 83.33% |
| Kossomateur vs Raven | 1–5 | 16.67% |
| Kossomateur vs Paul | 3–2 | 60.00% |
| Kossomateur vs Xiaoyu | 3–2 | 60.00% |
| Kossomateur vs Leo | 3–2 | 60.00% |
| Kossomateur vs Leroy | 3–2 | 60.00% |
| Kossomateur vs Jack-8 | 4–0 | 100.00% |
| Kossomateur vs Devil Jin | 1–3 | 25.00% |
| Kossomateur vs Fahkumram | 4–0 | 100.00% |
| Kossomateur vs Nina | 1–2 | 33.33% |
| Kossomateur vs Feng | 0–2 | 0.00% |
| Kossomateur vs Zafina | 1–1 | 50.00% |
| Kossomateur vs Heihachi | 2–0 | 100.00% |
| Kossomateur vs Kuma | 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.