| Kossomateur vs Kazuya | 12–12 | 50.00% |
| Kossomateur vs Reina | 11–10 | 52.38% |
| Kossomateur vs King | 8–10 | 44.44% |
| Kossomateur vs Dragunov | 12–5 | 70.59% |
| Kossomateur vs Eddy | 7–9 | 43.75% |
| Kossomateur vs Hwoarang | 9–6 | 60.00% |
| Kossomateur vs Jin | 10–5 | 66.67% |
| Kossomateur vs Victor | 8–5 | 61.54% |
| Kossomateur vs Steve | 8–4 | 66.67% |
| Kossomateur vs Lars | 5–7 | 41.67% |
| Kossomateur vs Jun | 8–4 | 66.67% |
| Kossomateur vs Law | 3–8 | 27.27% |
| Kossomateur vs Lili | 8–3 | 72.73% |
| Kossomateur vs Lee | 6–5 | 54.55% |
| Kossomateur vs Alisa | 7–3 | 70.00% |
| Kossomateur vs Asuka | 2–6 | 25.00% |
| Kossomateur vs Bryan | 3–4 | 42.86% |
| Kossomateur vs Claudio | 5–1 | 83.33% |
| Kossomateur vs Azucena | 4–2 | 66.67% |
| Kossomateur vs Raven | 1–5 | 16.67% |
| Kossomateur vs Yoshimitsu | 2–3 | 40.00% |
| 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 Shaheen | 2–2 | 50.00% |
| Kossomateur vs Paul | 1–2 | 33.33% |
| Kossomateur vs Nina | 1–2 | 33.33% |
| Kossomateur vs Feng | 0–2 | 0.00% |
| Kossomateur vs Zafina | 1–1 | 50.00% |
| Kossomateur vs Kuma | 0–1 | 0.00% |
| Kossomateur vs Fahkumram | 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.