| Kosta vs Kazuya | 7–7 | 50.00% |
| Kosta vs King | 8–5 | 61.54% |
| Kosta vs Jin | 7–5 | 58.33% |
| Kosta vs Law | 7–4 | 63.64% |
| Kosta vs Steve | 6–4 | 60.00% |
| Kosta vs Bryan | 5–3 | 62.50% |
| Kosta vs Miary Zo | 5–3 | 62.50% |
| Kosta vs Paul | 4–2 | 66.67% |
| Kosta vs Lars | 4–2 | 66.67% |
| Kosta vs Nina | 2–4 | 33.33% |
| Kosta vs Lidia | 2–3 | 40.00% |
| Kosta vs Lili | 4–0 | 100.00% |
| Kosta vs Azucena | 4–0 | 100.00% |
| Kosta vs Eddy | 2–2 | 50.00% |
| Kosta vs Heihachi | 3–0 | 100.00% |
| Kosta vs Yoshimitsu | 2–0 | 100.00% |
| Kosta vs Hwoarang | 2–0 | 100.00% |
| Kosta vs Asuka | 0–2 | 0.00% |
| Kosta vs Dragunov | 2–0 | 100.00% |
| Kosta vs Claudio | 1–1 | 50.00% |
| Kosta vs Panda | 2–0 | 100.00% |
| Kosta vs Leroy | 2–0 | 100.00% |
| Kosta vs Armor King | 1–1 | 50.00% |
| Kosta vs Feng | 0–1 | 0.00% |
| Kosta vs Alisa | 0–1 | 0.00% |
| Kosta vs Kuma | 1–0 | 100.00% |
| Kosta vs Raven | 0–1 | 0.00% |
| Kosta vs Clive | 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.