| Kosh vs Eddy | 15–6 | 71.43% |
| Kosh vs Jin | 15–4 | 78.95% |
| Kosh vs Reina | 17–2 | 89.47% |
| Kosh vs Law | 14–4 | 77.78% |
| Kosh vs Bryan | 11–7 | 61.11% |
| Kosh vs Hwoarang | 7–8 | 46.67% |
| Kosh vs Lili | 8–7 | 53.33% |
| Kosh vs King | 12–2 | 85.71% |
| Kosh vs Steve | 13–1 | 92.86% |
| Kosh vs Raven | 10–1 | 90.91% |
| Kosh vs Yoshimitsu | 9–1 | 90.00% |
| Kosh vs Paul | 7–2 | 77.78% |
| Kosh vs Asuka | 8–1 | 88.89% |
| Kosh vs Nina | 6–3 | 66.67% |
| Kosh vs Shaheen | 3–5 | 37.50% |
| Kosh vs Leroy | 6–1 | 85.71% |
| Kosh vs Jun | 4–3 | 57.14% |
| Kosh vs Dragunov | 3–3 | 50.00% |
| Kosh vs Lars | 6–0 | 100.00% |
| Kosh vs Xiaoyu | 3–2 | 60.00% |
| Kosh vs Kazuya | 5–0 | 100.00% |
| Kosh vs Devil Jin | 3–2 | 60.00% |
| Kosh vs Leo | 3–2 | 60.00% |
| Kosh vs Panda | 3–2 | 60.00% |
| Kosh vs Alisa | 2–2 | 50.00% |
| Kosh vs Lee | 3–1 | 75.00% |
| Kosh vs Azucena | 1–3 | 25.00% |
| Kosh vs Jack-8 | 0–3 | 0.00% |
| Kosh vs Kuma | 3–0 | 100.00% |
| Kosh vs Zafina | 2–1 | 66.67% |
| Kosh vs Victor | 1–2 | 33.33% |
| Kosh vs Feng | 0–2 | 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.