| Kosta vs Dragunov | 6–8 | 42.86% |
| Kosta vs King | 6–2 | 75.00% |
| Kosta vs Kazuya | 6–1 | 85.71% |
| Kosta vs Bryan | 2–4 | 33.33% |
| Kosta vs Feng | 5–1 | 83.33% |
| Kosta vs Steve | 4–1 | 80.00% |
| Kosta vs Asuka | 4–1 | 80.00% |
| Kosta vs Reina | 5–0 | 100.00% |
| Kosta vs Hwoarang | 4–0 | 100.00% |
| Kosta vs Jin | 2–2 | 50.00% |
| Kosta vs Devil Jin | 2–2 | 50.00% |
| Kosta vs Paul | 1–2 | 33.33% |
| Kosta vs Lili | 1–2 | 33.33% |
| Kosta vs Alisa | 3–0 | 100.00% |
| Kosta vs Eddy | 0–3 | 0.00% |
| Kosta vs Jack-8 | 0–2 | 0.00% |
| Kosta vs Lee | 2–0 | 100.00% |
| Kosta vs Azucena | 2–0 | 100.00% |
| Kosta vs Lidia | 0–2 | 0.00% |
| Kosta vs Law | 0–1 | 0.00% |
| Kosta vs Leo | 1–0 | 100.00% |
| Kosta vs Lars | 1–0 | 100.00% |
| Kosta vs Shaheen | 1–0 | 100.00% |
| Kosta vs Jun | 1–0 | 100.00% |
| Kosta vs Raven | 1–0 | 100.00% |
| Kosta vs Clive | 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.