| Kossi vs Reina | 12–14 | 46.15% |
| Kossi vs Jin | 13–9 | 59.09% |
| Kossi vs Lili | 10–9 | 52.63% |
| Kossi vs Clive | 10–8 | 55.56% |
| Kossi vs Law | 11–5 | 68.75% |
| Kossi vs King | 1–15 | 6.25% |
| Kossi vs Hwoarang | 6–10 | 37.50% |
| Kossi vs Steve | 4–12 | 25.00% |
| Kossi vs Eddy | 8–8 | 50.00% |
| Kossi vs Lidia | 11–5 | 68.75% |
| Kossi vs Azucena | 6–9 | 40.00% |
| Kossi vs Kazuya | 4–7 | 36.36% |
| Kossi vs Bryan | 5–5 | 50.00% |
| Kossi vs Lars | 1–9 | 10.00% |
| Kossi vs Fahkumram | 5–4 | 55.56% |
| Kossi vs Leo | 4–4 | 50.00% |
| Kossi vs Nina | 1–7 | 12.50% |
| Kossi vs Victor | 2–6 | 25.00% |
| Kossi vs Paul | 3–4 | 42.86% |
| Kossi vs Yoshimitsu | 5–2 | 71.43% |
| Kossi vs Jack-8 | 2–5 | 28.57% |
| Kossi vs Asuka | 2–5 | 28.57% |
| Kossi vs Raven | 5–2 | 71.43% |
| Kossi vs Leroy | 1–5 | 16.67% |
| Kossi vs Xiaoyu | 3–2 | 60.00% |
| Kossi vs Devil Jin | 2–2 | 50.00% |
| Kossi vs Dragunov | 2–2 | 50.00% |
| Kossi vs Claudio | 2–2 | 50.00% |
| Kossi vs Jun | 4–0 | 100.00% |
| Kossi vs Lee | 2–1 | 66.67% |
| Kossi vs Armor King | 2–1 | 66.67% |
| Kossi vs Feng | 0–2 | 0.00% |
| Kossi vs Kuma | 0–2 | 0.00% |
| Kossi vs Alisa | 1–0 | 100.00% |
| Kossi vs Panda | 0–1 | 0.00% |
| Kossi vs Heihachi | 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.