| kosma vs King | 27–16 | 62.79% |
| kosma vs Jin | 19–18 | 51.35% |
| kosma vs Kazuya | 18–19 | 48.65% |
| kosma vs Steve | 14–12 | 53.85% |
| kosma vs Nina | 11–11 | 50.00% |
| kosma vs Paul | 6–14 | 30.00% |
| kosma vs Heihachi | 13–6 | 68.42% |
| kosma vs Law | 11–7 | 61.11% |
| kosma vs Yoshimitsu | 6–12 | 33.33% |
| kosma vs Reina | 13–5 | 72.22% |
| kosma vs Dragunov | 8–7 | 53.33% |
| kosma vs Victor | 9–6 | 60.00% |
| kosma vs Eddy | 6–9 | 40.00% |
| kosma vs Lili | 6–8 | 42.86% |
| kosma vs Lee | 10–4 | 71.43% |
| kosma vs Bryan | 5–8 | 38.46% |
| kosma vs Asuka | 8–4 | 66.67% |
| kosma vs Raven | 6–6 | 50.00% |
| kosma vs Feng | 5–6 | 45.45% |
| kosma vs Alisa | 5–6 | 45.45% |
| kosma vs Hwoarang | 3–7 | 30.00% |
| kosma vs Jack-8 | 6–4 | 60.00% |
| kosma vs Lars | 4–6 | 40.00% |
| kosma vs Claudio | 7–3 | 70.00% |
| kosma vs Azucena | 6–4 | 60.00% |
| kosma vs Jun | 3–6 | 33.33% |
| kosma vs Devil Jin | 3–5 | 37.50% |
| kosma vs Shaheen | 4–4 | 50.00% |
| kosma vs Xiaoyu | 4–3 | 57.14% |
| kosma vs Leo | 4–3 | 57.14% |
| kosma vs Zafina | 2–3 | 40.00% |
| kosma vs Leroy | 2–3 | 40.00% |
| kosma vs Lidia | 3–1 | 75.00% |
| kosma vs Kuma | 2–1 | 66.67% |
| kosma vs Panda | 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.